What firmness mattress is best for a child?

For babies and toddlers (0-3 years), a firm mattress (7-9/10) is essential — the NHS advises a firm, flat surface to reduce SIDS risk. For young children (3-7), medium-firm to firm (6-7/10) supports developing spines. Older children (7-12) can use medium to medium-firm (5-7/10). Teenagers choose based on body weight, similar to adults. Children are lighter than adults, so a medium-firm surface provides excellent support — their weight doesn't compress the system as much.

Is memory foam safe for children?

Not for children under approximately 7-8 years. Memory foam moulds to body shape, creating suffocation risk for babies and inadequate structural support for developing spines. It also retains more heat than other types — problematic for children who run hot. For ages 8+, memory foam is acceptable and provides good pressure relief. Always choose CertiPUR-certified foam.

How often should I replace my child's mattress?

A quality children's mattress lasts 8-10 years. Replace earlier if you see: visible sagging that doesn't recover, broken/protruding springs, persistent odour or staining through the protector, or a growth spurt changing the child's weight significantly. The cot-to-bed transition (age 2-3) always requires a new mattress. From a single bed onward, one well-made mattress can last from childhood through the teenage years.

Do children need a special mattress or can they use an adult one?

Babies and toddlers need specialised cot mattresses meeting BS EN 16890:2017, precisely sized to prevent entrapment. From a single bed (typically age 5+), children can use standard adult mattresses if the firmness suits their age and weight. Many parents prefer this — a quality adult single lasts well into adulthood. Key: medium-firm for most children, BS 7177 compliance.

What UK safety standards should a children's mattress meet?

Mandatory: BS 7177 (fire safety) under the Furniture and Furnishings (Fire) (Safety) Regulations 1988. Strongly recommended for cots: BS EN 16890:2017 (suffocation, entrapment, firmness). Voluntary but valuable: NBF Approved (independent audits), OEKO-TEX Standard 100 (1,000+ chemical tests), CertiPUR (foam safety), GOTS (organic textiles), GOLS (organic latex).

How do I protect a child's mattress from bedwetting?

Use a waterproof TPU-membrane protector — completely waterproof yet breathable, blocking liquid while allowing air through. UK options: Hippychick (cotton/Tencel, £15-42), Hygge Sheets (5-layer). Choose OEKO-TEX Standard 100 certified. Wash at 40°C normally, 60°C for allergy-prone children to kill dust mites. Always keep a spare protector for immediate 3am bed changes.

When should a child transition from a cot to a bed?

Between ages 2 and 3.5, though waiting closer to 3 is often better. Signs of readiness: climbing out, nearly toilet trained, outgrowing the cot, or a sibling needs it. Options: convert a cot-bed (same 70×140cm mattress), use a toddler bed with guards, or place a mattress on the floor. If a sibling is arriving, transition at least 6 weeks before the due date. Under-6s should never use top bunks.

What is the best type of mattress for a child?

Pocket sprung and open coil are generally best — firm, responsive support for developing spines, good airflow, naturally hypoallergenic. For ages 8+, hybrids (springs + foam) offer excellent support and comfort. Latex is ideal for allergy-prone children — antimicrobial, dust-mite resistant, durable. Avoid thick memory foam under age 8 and all-foam mattresses for children who overheat.

How thick should a children's mattress be?

Cots: 10-15cm. Toddler/children's beds: 15-22cm. Critical: bunk beds and mid-sleepers have a maximum of 15-16cm to keep the sleeping surface safely below the guard rail. Standard singles can accommodate 22-25cm. Children don't need thick luxury comfort layers — their lighter weight gets adequate cushioning from thinner mattresses.

Are bunk bed mattresses different from regular mattresses?

Primarily in thickness. Guard rails are designed around a maximum mattress height of 15-16cm — thicker mattresses create fall risks. Same quality criteria apply: BS 7177, appropriate firmness, breathable and hypoallergenic materials. Under-6s should never sleep on the top bunk. Shorty mattresses (75×175cm) are commonly used for bunk beds in smaller rooms.

How many hours of sleep do children need?

NHS recommendations: newborns 14-17 hours, infants (4-12 months) 12-16 hours, toddlers (1-2) 11-14 hours, pre-schoolers (3-5) 10-13 hours, school-age (6-12) 9-12 hours, teenagers 8-10 hours. During deep sleep, growth hormone is released, tissue repair occurs, and the brain consolidates learning. Sleep-deprived children are more irritable, struggle to concentrate, and may develop behavioural difficulties.

Should I buy an organic mattress for my child?

Organic mattresses (GOTS cotton, GOLS latex) offer fewer potential skin irritants — relevant for eczema or chemical sensitivity. Organic wool provides natural temperature regulation. However, they cost £300-800+ more. A non-organic mattress with OEKO-TEX Standard 100 and CertiPUR certifications has still been tested against comprehensive harmful substance lists and is a perfectly safe, more affordable alternative.

Safety-First Testing for Growing Bodies

Every mattress assessed for BS 7177 compliance, age-appropriate support, and hypoallergenic properties. See our methodology

Updated January 2026

Best Mattresses for Kids
UK 2026: Safety, Support & Growing Bodies

Children spend 40% of their childhood asleep. During that time, growth hormone is released, bones lengthen, and the brain consolidates the day's learning. A mattress that meets UK safety standards, supports developing spines, and handles the practical realities of childhood — bedwetting, allergies, overheating — is a developmental necessity, not a luxury.

40%

Childhood Spent Asleep

Children spend approximately 40% of their childhood asleep, making mattress quality a significant factor in their development.

6-7

Ideal Firmness Rating

Children aged 3-12 need medium-firm to firm mattresses (6-7 out of 10) to properly support growing bones and developing spines.

1 in 5

Children Wet the Bed

Around 21% of 5-year-olds and 8% of 9-year-olds still wet the bed, making waterproof protection an essential mattress investment.

1.5cm

Spine Growth Per Night

A toddler's spine can grow up to 1.5cm during sleep as intervertebral discs fill with water, requiring firm support in a neutral position.

Expert Review

David Patel

Technical Editor

Former Product Reviewer, Which? • 11 years experience

David spent 7 years at Which? developing and running their mattress testing programme, where he gained extensive experience in product safety standards and consumer protection. His rigorous, data-driven approach to testing makes him ideally suited to evaluate children's mattresses—products where safety, durability, and compliance with British Standards are non-negotiable requirements.

Published: 27 January 2026

Updated: 27 January 2026

24 min read

In This Guide:

Age-Based Mattress Finder Mattress Picks Sleep Challenges Safety Certifications Key Features Type Suitability by Age Firmness by Age UK Size Guide Sleep Hours (NHS)Tips for Parents FAQs (12 Questions)

Interactive Tool

Age-Based Mattress Finder

Select your child's age group to get specific recommendations for firmness, size, mattress type, and safety requirements.

Select your child's age group above to see personalised recommendations

Choosing a children's mattress in the UK means navigating requirements that change with every developmental stage. A newborn needs a firm, flat cot mattress meeting suffocation-prevention standards (BS EN 16890). A toddler transitioning from cot to bed needs firm support for a spine growing 1.5cm per night. A school-age child needs hypoallergenic materials because 1 in 20 young children are sensitive to the dust mites breeding inside their mattress. And a teenager needs a mattress that accommodates a rapidly changing body weight — the same guidance as an adult, but on a tighter budget.

Safety is the non-negotiable starting point: every mattress sold in the UK must comply with BS 7177 fire safety standards — non-compliance is a criminal offence. Beyond that, half a million UK children aged 5-16 wet the bed, making waterproof protection essential, not optional. The 39 mattresses below have been evaluated for safety compliance, age-appropriate support, breathability, and the durability needed to survive 8-10 years of childhood. Use the Age-Based Finder above to narrow the list to your child's specific needs.

Our Tested Picks

Best Mattresses for Kids & Teenagers

All 39 mattresses in our database, assessed for safety, firmness, breathability, and durability. Use the filters to match your child's needs.

Filters:

39 mattresses found

39 results

Emma

Emma Original Elite

4.8(4,321 verified reviews)

£899

Double size

Emma’s most advanced hybrid: seven layers with AirGrid pressure relief and Outlast temperature regulation.

TypeHybrid

Firmness

4/10

Trial Period200 nights

Best ForSide, Back sleepers

Key Features

AirGrid™ technology
7 ergonomic zones
Outlast® cooling
Premium motion isolation

Ideal For

Pressure ReliefCoolingHip Pain Relief

Free next-day delivery10 years warranty

Read our review Check Price

Emma

Emma Original Pro

4.7(3,876 verified reviews)

£699

Double size

Six-layer Emma hybrid with ThermoSync cooling for hot sleepers and light sleepers.

TypeHybrid

Firmness

5/10

Trial Period200 nights

Best ForSide, Back sleepers

Key Features

ThermoSync™ technology
Pocket springs + foam
5 ergonomic zones
Temperature regulation

Ideal For

CoolingPressure ReliefMotion Isolation

Free next-day delivery10 years warranty

Read our review Check Price

Emma

Emma Original

Bestseller33% OFF

Emma Original

4.8(12,453 verified reviews)

£499£749

Double size

Award-winning Emma hybrid for all-around comfort, couples, and back-pain sufferers. The UK’s most popular boxed mattress.

TypeHybrid

Firmness

7/10

Trial Period200 nights

Best ForSide, Back sleepers

Key Features

AeroFlex pocket springs
Memory foam layers
7 support zones
Which? Best Buy

Ideal For

Pressure ReliefMotion IsolationBack Pain Relief

Free next-day delivery10 years warranty

Read our review Check Price

Emma

Emma Original Lite

4.5(2,987 verified reviews)

£349

Double size

Entry-level Emma hybrid for budget-conscious buyers, guest rooms, and a first mattress.

TypeHybrid

Firmness

7/10

Trial Period200 nights

Best ForSide, Back sleepers

Key Features

Pocket springs + foam
5 support zones
Entry-level hybrid comfort

Ideal For

Pressure ReliefMotion Isolation

Free next-day delivery10 years warranty

Read our review Check Price

Emma

Emma Performance 26

25% OFF

Emma Performance 26

4.3(1,240 verified reviews)

£549£729

Double size

The 26cm Performance hybrid with improved AirGrid™ Tech, MemoryAdapt foam and zoned pocket springs. Balanced cushioning and support for all sleep positions.

TypeHybrid

Firmness

5/10

Trial Period200 nights

Best ForSide, Back sleepers

Key Features

Emma AirGrid™ Tech
26cm DeepCalm Comfort™
Zoned pocket springs

Ideal For

Pressure ReliefCoolingMotion Isolation

Free next-day delivery10 years warranty

Read our review Check Price

Emma

Emma Performance 28

25% OFF

Emma Performance 28

4.3(980 verified reviews)

£599£799

Double size

The 28cm Performance hybrid with extra MemoryAdapt and SupportBase depth for more contouring. Built for side sleepers who want a deeper sink-in feel than the 26.

TypeHybrid

Firmness

5/10

Trial Period200 nights

Best ForSide, Back sleepers

Key Features

Emma AirGrid™ Tech
28cm DeepCalm Comfort™
Zoned pocket springs

Ideal For

Pressure ReliefCoolingHip Pain Relief

Free next-day delivery10 years warranty

Read our review Check Price

Emma

Emma Performance 30

25% OFF

Emma Performance 30

4.2(640 verified reviews)

£749£999

Double size

The tallest Performance hybrid at 30cm, with the deepest MemoryAdapt cradle and AirGrid™ Tech. Maximum cushioning for side sleepers who need extra shoulder sink.

TypeHybrid

Firmness

4/10

Trial Period200 nights

Best ForSide, Combination sleepers

Key Features

Emma AirGrid™ Tech
30cm DeepCalm Comfort™
Zoned pocket springs

Ideal For

Pressure ReliefCoolingHip Pain Relief

Free next-day delivery10 years warranty

Read our review Check Price

Simba

Simba Hybrid Essential

4.5(4,567 verified reviews)

£549£949

Double size

Entry-level Simba hybrid for budget-conscious buyers who still want Aerocoil spring comfort.

TypeHybrid

Firmness

5/10

Trial Period200 nights

Best ForSide, Back sleepers

Key Features

Titanium Aerocoil springs
Simbatex foam
Hypoallergenic cover

Ideal For

Pressure ReliefMotion Isolation

Free delivery within 3-5 days10 years warranty

Read our review Check Price

Simba

Simba Hybrid

4.6(6,234 verified reviews)

£799

Double size

Core Simba hybrid for all sleep positions and couples, with graphite-infused cooling foam.

TypeHybrid

Firmness

5/10

Trial Period200 nights

Best ForSide, Back sleepers

Key Features

2,500 Aerocoil springs
Graphite-infused foam
Open-cell technology

Ideal For

Pressure ReliefCoolingMotion Isolation

Free delivery within 3-5 days10 years warranty

Read our review Check Price

Simba

Simba Hybrid Pro

Bestseller

Simba Hybrid Pro

4.7(8,921 verified reviews)

£1199£1599

Double size

Premium Simba hybrid with extra Aerocoil springs and a wool layer for back-pain sufferers and heavier sleepers.

TypeHybrid

Firmness

7/10

Trial Period200 nights

Best ForBack, Stomach sleepers

Key Features

5,000 Aerocoil springs
Wool layer
Edge-to-edge support

Ideal For

Back Pain ReliefCoolingPressure Relief

Free delivery within 3-5 days10 years warranty

Read our review Check Price

Simba

Simba Hybrid Luxe

4.7(2,345 verified reviews)

£1599

Double size

Flagship Simba hybrid for premium comfort and hot sleepers, with a bamboo cover and ten-layer build.

TypeHybrid

Firmness

5/10

Trial Period200 nights

Best ForSide, Back sleepers

Key Features

10 layers
Bamboo cover
Temperature regulation technology

Ideal For

CoolingPressure ReliefMotion Isolation

Free delivery within 3-5 days10 years warranty

Read our review Check Price

Simba

Simba Hybrid Ultra

4.6(890 verified reviews)

£1749

Double size

Simba’s tallest Hybrid: 34cm, eleven layers, FusionCool and HeatRelease. Extra-deep sheets required.

TypeHybrid

Firmness

4/10

Trial Period200 nights

Best ForSide, Back sleepers

Key Features

Up to 7,300 Aerocoil springs
FusionCool kapok blend
HeatRelease graphite strips
34cm 11-layer hybrid

Ideal For

CoolingPressure ReliefMotion Isolation

Free delivery within 3-5 days10 years warranty

Read our review Check Price

Eve

Eve Original

4.5(4,567 verified reviews)

£449

Double size

All-foam Eve mattress for side sleepers and budget-conscious buyers.

TypeMemory Foam

Firmness

5/10

Trial Period100 nights

Best ForSide, Back sleepers

Key Features

3-layer foam construction
Breathable cover
CertiPUR certified

Ideal For

Pressure ReliefMotion Isolation

Free delivery within 5 days10 years warranty

Read our review Check Price

Eve

Eve Premium

40% OFF

Eve Premium

4.2(148 verified reviews)

£569£949

Double size

Eve’s taller all-foam mattress: 28cm, four foam layers, Floatfoam and graphite on top, a 7-zone base, and no springs. Medium-firm hug if you already liked Original and wanted more height.

TypeMemory Foam

Firmness

7/10

Trial Period200 nights

Best ForSide, Back sleepers

Key Features

28cm all-foam
Floatfoam® + graphite memory
7-zone base

Ideal For

Pressure ReliefMotion IsolationHip Pain Relief

Free delivery to your room10 years warranty

Read our review Check Price

Eve

Eve Original Hybrid

4.3(568 verified reviews)

£699

Double size

Eve’s current UK Original Hybrid: 25cm of EveComfort and memory foam over 800+ full-size 12cm pocket springs. Medium-firm, 200-night trial. Not the all-foam Original.

TypeHybrid

Firmness

7/10

Trial Period200 nights

Best ForSide, Back sleepers

Key Features

25cm hybrid
800+ 12cm pocket springs
EveComfort + memory foam
Which? Best Buy

Ideal For

Pressure ReliefMotion IsolationBack Pain Relief

Free delivery to your room10 years warranty

Read our review Check Price

Eve

Eve Premium Hybrid

38% OFF

Eve Premium Hybrid

4.6(5,432 verified reviews)

£749£1199

Double size

Eve hybrid for couples and all sleep positions, with pocket springs and a foam-encased edge.

TypeHybrid

Firmness

7/10

Trial Period100 nights

Best ForSide, Back sleepers

Key Features

1,500 pocket springs
Full-foam perimeter
Temperature-regulating cover

Ideal For

Hip Pain ReliefPressure ReliefMotion Isolation

Free delivery within 5 days10 years warranty

Read our review Check Price

Eve

Eve Wunderflip Premium Hybrid

50% OFF

Eve Wunderflip Premium Hybrid

4.3(123 verified reviews)

£549£1099

Double size

Eve’s zip-off hybrid: two labelled firmnesses in one 28cm mattress if you will actually flip the core. Double, king and super king only.

TypeHybrid

Firmness

7/10

Trial Period200 nights

Best ForSide, Back sleepers

Key Features

Zip-off dual firmness (medium or firmer)
1,000 dual-tension springs plus 1,500 extra pocket/micro springs
50mm open-cell foam, Purotex+ cover

Ideal For

Pressure ReliefMotion IsolationHip Pain Relief

Free delivery within 3-7 days10 years warranty

Read our review Check Price

Eve

Eve Wunderflip Ultimate Hybrid

4.2(58 verified reviews)

£1299

Double size

Eve’s latex flagship hybrid: same zip-off two-feel core as Wunderflip Premium, plus latex rebound. Double from £1,299; king £1,399; super king £1,549. No UK single.

TypeHybrid

Firmness

7/10

Trial Period200 nights

Best ForSide, Back sleepers

Key Features

Zip-off dual firmness (medium or firmer)
Latex comfort + 30mm 7-zone memory foam
1,000 dual-tension springs plus 2,000 extra pocket/micro springs
Purotex+ Adaptive cover

Ideal For

Pressure ReliefMotion IsolationHip Pain Relief

Free delivery within 3-7 days10 years warranty

Read our review Check Price

Nectar

Nectar Memory Foam

Bestseller

Nectar Memory Foam

4.7(15,678 verified reviews)

£499£899

Double size

Nectar’s original memory foam with a 365-night trial and forever warranty.

TypeMemory Foam

Firmness

7/10

Trial Period365 nights

Best ForBack, Side sleepers

Key Features

5-layer construction
Cooling cover
Adaptive memory foam

Ideal For

Back Pain ReliefPressure Relief

Free delivery within 2-5 daysForever warranty warranty

Read our review Check Price

Nectar

Nectar Hybrid

4.6(4,321 verified reviews)

£749

Double size

Nectar hybrid for couples and combination sleepers, with gel memory foam over pocket springs.

TypeHybrid

Firmness

5/10

Trial Period365 nights

Best ForSide, Back sleepers

Key Features

Pocket spring base
Gel memory foam
Reinforced edge support

Ideal For

Motion IsolationPressure ReliefBack Pain Relief

Free delivery within 2-5 daysForever warranty warranty

Read our review Check Price

Nectar

Nectar Premier

4.6(3,456 verified reviews)

£849

Double size

Premium Nectar memory foam for hot sleepers, with a phase-change cover and copper-infused foam.

TypeMemory Foam

Firmness

5/10

Trial Period365 nights

Best ForSide, Back sleepers

Key Features

Phase-change cover
Copper-infused foam
Enhanced airflow

Ideal For

CoolingPressure ReliefBack Pain Relief

Free delivery within 2-5 daysForever warranty warranty

Read our review Check Price

Nectar

Nectar Premier Hybrid

4.6(2,765 verified reviews)

£1099

Double size

Nectar’s premium hybrid for all sleep positions, with active cooling and zoned springs.

TypeHybrid

Firmness

5/10

Trial Period365 nights

Best ForSide, Back sleepers

Key Features

Active cooling
Zoned support springs
Luxury quilted cover

Ideal For

CoolingPressure ReliefMotion Isolation

Free delivery within 2-5 daysForever warranty warranty

Read our review Check Price

Silentnight

Silentnight Eco Comfort Breathe

4.4(3,421 verified reviews)

£349£549

Double size

Eco-conscious Silentnight pocket spring with recycled springs and Eco Comfort fibres.

TypePocket Spring

Firmness

5/10

Trial Period60 nights

Best ForSide, Back sleepers

Key Features

Recycled spring system
Eco Comfort fibres
Breathable cover

Ideal For

Pressure ReliefMotion Isolation

Free delivery within 7 days5 years warranty

Check Price

Silentnight

Silentnight Mirapocket 1200

4.5(2,876 verified reviews)

£499

Double size

Traditional Silentnight Mirapocket with 1200 springs and zoned support for back-pain sufferers.

TypePocket Spring

Firmness

7/10

Trial Period60 nights

Best ForBack, Stomach sleepers

Key Features

1200 pocket springs (King)
Zoned support
Hypoallergenic

Ideal For

Back Pain ReliefPressure Relief

Free delivery within 7 days5 years warranty

Check Price

Silentnight

Silentnight Mirapocket 2000

4.5(2,145 verified reviews)

£649

Double size

Higher-count Silentnight Mirapocket for couples who want a premium pocket-spring feel.

TypePocket Spring

Firmness

7/10

Trial Period60 nights

Best ForSide, Back sleepers

Key Features

2000 pocket springs (King)
Edge-to-edge support
Geltex comfort layer

Ideal For

Motion IsolationPressure ReliefBack Pain Relief

Free delivery within 7 days5 years warranty

Check Price

Silentnight

Silentnight Geltex Ultra 3000

4.5(4,321 verified reviews)

£849

Double size

Silentnight’s Geltex hybrid for hot sleepers, with 3000 springs and a cooling comfort layer.

TypeHybrid

Firmness

5/10

Trial Period60 nights

Best ForBack, Stomach sleepers

Key Features

3000 pocket springs (King)
Geltex cooling layer
Micro pocket springs

Ideal For

CoolingBack Pain Relief

Free delivery within 7 days5 years warranty

Check Price

Silentnight

Silentnight UltraGel Cool-to-touch 3000

4(1 verified reviews)

£789

Double size

Current Silentnight UK UltraGel Cool-to-touch 3000 — not the older Geltex Ultra 3000. We have not slept on this one yet.

TypeHybrid

Firmness

7/10

Trial Period60 nights

Best ForSide, Back sleepers

Key Features

3000 springs (2000 Mirapocket + 1000 mini)
UltraGel™ cool-to-touch + SensICE™
Plush pillowtop · Soft or Firm

Ideal For

CoolingPressure Relief

Made to order · about 14 days5 years warranty

Read our review Check Price

Silentnight

Silentnight Lift Replenish Hybrid 2000

4.2(0 verified reviews)

£569

Double size

Silentnight Lift Replenish Hybrid 2000: latex over 2000 Mirapocket springs. Spec-based listing — we have not slept on this yet.

TypeHybrid

Firmness

5/10

Trial Period60 nights

Best ForSide, Back sleepers

Key Features

2000 Mirapocket springs
Latex + EcoMemory Fibre
Intense sleep surface
Medium/Soft or Medium/Firm

Ideal For

Pressure ReliefBack Pain ReliefMotion Isolation

Made to order · aim 14 days · room of choice5 years warranty

Read our review Check Price

Silentnight

Silentnight Premier Inn Mattress 2.0

4(0 verified reviews)

£649

Double size

Silentnight’s official Premier Inn partnership mattress: 1000 pocket springs, Geltex, 28.5cm. We have not slept on this one yet.

TypeHybrid

Firmness

7/10

Trial PeriodIn-store only

Best ForBack, Combination sleepers

Key Features

1000 Mirapocket springs
Geltex® comfort layer
28.5cm pillowtop
Made in the UK

Ideal For

Pressure ReliefCooling

Free delivery from 10 days6 years warranty

Read our review Check Price

Hypnos

Hypnos Orthos Support

4.8(2,134 verified reviews)

£1499

Double size

Hand-crafted Hypnos pocket spring for back-pain sufferers who want orthopaedic support.

TypePocket Spring

Firmness

8/10

Trial Period60 nights

Best ForBack, Stomach sleepers

Key Features

ReActive pocket springs
Natural fillings
Hand side-stitched

Ideal For

Back Pain ReliefHip Pain Relief

Free delivery & setup10 years warranty

Check Price

Hypnos

Hypnos Woolton

4.7(1,543 verified reviews)

£1899

Double size

Luxury Hypnos pocket spring with British wool and a hand-tufted finish.

TypePocket Spring

Firmness

7/10

Trial Period60 nights

Best ForSide, Back sleepers

Key Features

British wool
Hand-tufted
Sustainable materials

Ideal For

Pressure ReliefCooling

Free delivery & setup10 years warranty

Check Price

Hypnos

Hypnos Pillow Top

4.7(1,876 verified reviews)

£2599

Double size

Hypnos pillow-top pocket spring for premium comfort and a plush feel.

TypePocket Spring

Firmness

5/10

Trial Period60 nights

Best ForSide, Back sleepers

Key Features

Cashmere blend
Pillow top layer
Dual spring system

Ideal For

Pressure ReliefHip Pain Relief

Free delivery & setup10 years warranty

Check Price

Hypnos

Hypnos Royal Comfort

4.8(987 verified reviews)

£3499

Double size

Flagship Hypnos luxury pocket spring with alpaca and silk, built for hotel-quality sleep.

TypePocket Spring

Firmness

5/10

Trial Period60 nights

Best ForSide, Back sleepers

Key Features

Alpaca & silk blend
Hand-crafted
Royal Warrant holder

Ideal For

Pressure ReliefMotion Isolation

Free delivery & setup10 years warranty

Check Price

OTTY

OTTY Aura Hybrid

4.1(2,145 verified reviews)

£349.99

Double size

Entry boxed OTTY hybrid for guest rooms and younger sleepers. Thinner than Original; no UK small double.

TypeHybrid

Firmness

7/10

Trial Period100 nights

Best ForBack, Combination sleepers

Key Features

Up to 1,000 × 16cm pocket springs
Washable cover
Formerly sold as OTTY Essential

Ideal For

Pressure Relief

Free 2-man delivery10 years warranty

Read our review Check Price

OTTY

OTTY Original Hybrid

Bestseller

OTTY Original Hybrid

4.4(5,643 verified reviews)

£499.99

Double size

OTTY’s flagship boxed hybrid — the default pick for mixed positions. Original Ice is a cover option, not a separate mattress.

TypeHybrid

Firmness

7/10

Trial Period100 nights

Best ForSide, Back sleepers

Key Features

Up to 2,000 × 16cm pocket springs
Knitted cover plus Airflow
The OTTY most people should try

Ideal For

Pressure ReliefCoolingMotion Isolation

Free 2-man delivery10 years warranty

Read our review Check Price

OTTY

OTTY Extra Firm Hybrid

4(1,321 verified reviews)

£524.99

Double size

Flippable extra-firm OTTY hybrid for heavier back and stomach sleepers who want a hard bed.

TypeHybrid

Firmness

8/10

Trial Period100 nights

Best ForBack, Stomach sleepers

Key Features

Thicker pocket springs than Original
Flip for 9/10 or 10/10
Also sold as OTTY Firm

Ideal For

Back Pain Relief

Free 2-man delivery10 years warranty

Read our review Check Price

OTTY

OTTY Pure Hybrid

50% OFF

OTTY Pure Hybrid

4.3(5,643 verified reviews)

£524.99£1049

Double size

Bamboo-charcoal OTTY hybrid on Original-class springs. A foam step-up, not a handmade Natural Origin bed.

TypeHybrid

Firmness

7/10

Trial Period100 nights

Best ForSide, Back sleepers

Key Features

Bamboo and charcoal foam
Original-class 2,000 × 16cm springs
Slightly softer than Original at 6.5/10

Ideal For

CoolingPressure Relief

Free 2-man delivery10 years warranty

Read our review Check Price

OTTY

OTTY Pure Pro Hybrid

4.2(1,765 verified reviews)

£539.99

Double size

Pure’s charcoal stack plus a second comfort-spring layer, without Pure+ height.

TypeHybrid

Firmness

7/10

Trial Period100 nights

Best ForSide, Back sleepers

Key Features

Up to 3,000 springs (2,000 × 16cm + 1,000 × 2cm comfort springs)
27cm — taller than Pure
Also sold as OTTY Pure 3000

Ideal For

CoolingPressure ReliefBack Pain Relief

Free 2-man delivery10 years warranty

Read our review Check Price

OTTY

OTTY Pure+ Hybrid 4000

4.2(1,543 verified reviews)

£599.99

Double size

Tallest boxed OTTY hybrid for side sleepers who want extra height and a softer feel. Needs extra-deep sheets.

TypeHybrid

Firmness

5/10

Trial Period100 nights

Best ForSide, Combination sleepers

Key Features

Up to 4,000 pocket springs in two layers
28cm — tallest current boxed OTTY
Softest boxed feel at 5.5/10

Ideal For

Pressure ReliefCoolingHip Pain Relief

Free 2-man delivery10 years warranty

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Understanding the Challenges

Children's Sleep Challenges & Mattress Solutions

From growing bones to bedwetting, children's mattresses must handle demands adult mattresses never face.

Growing Bones & Developing Spine

Critical

Children's skeletons contain growth plates (epiphyseal plates) that actively produce new bone tissue. During sleep, growth hormone is released in pulses, driving skeletal development. A toddler's spine can lengthen by up to 1.5cm per night as intervertebral discs absorb water. Both spine and neck must be firmly supported in neutral position during this process.

Solution

Choose a medium-firm to firm mattress (6-7/10) that supports the spine without sagging. Pocket sprung and open coil mattresses provide the best combination of support and responsiveness. Avoid thick memory foam for children under 8 — it moulds to the body and may not provide adequate structural support for a developing skeleton.

Bedwetting (Nocturnal Enuresis)

Very Common

Approximately half a million UK children aged 5-16 wet the bed. At age 5, prevalence is 21%. At 7.5, it's 15.5%. At 9.5, about 8% still wet the bed. Nocturnal enuresis is 2-3× more common in boys. There is a strong genetic component: if one parent wet the bed after age 5, the child has a ~40% chance. Moisture permanently damages mattresses, voids warranties, and breeds mould.

Solution

A waterproof TPU-membrane protector is essential — not optional. Modern protectors are breathable, silent (no crinkling), absorb up to 8 cups of liquid, and survive 300+ washes. Look for OEKO-TEX Standard 100 certification. Use both a mattress and pillow protector. Keep a spare for immediate bed changes at 3am.

Allergies, Eczema & Dust Mites

Common

House dust mite allergy affects 1 in 20 young children and is one of the most common triggers for childhood asthma and eczema. Mattresses are a primary breeding ground. Eczema affects 10-12% of the UK population — 60% of cases appear before age 1, 85% before age 5. Almost all children with eczema test positive for dust mite sensitivity.

Solution

Choose hypoallergenic fillings: natural latex, organic cotton, and wool are inherently antimicrobial and dust-mite resistant. Avoid feathers and animal hair. Anti-allergy covers create a barrier against mites. Wash protectors at 60°C for allergy-prone children. CertiPUR-certified foam and OEKO-TEX Standard 100 materials provide chemical safety assurance.

Temperature Regulation & Overheating

Common

Children have a higher metabolic rate per kg than adults, generating proportionally more body heat. Their thermoregulatory systems are less mature. Night sweats are common and disrupt sleep cycles — causing restless nights, frequent waking, and daytime irritability. Overheating is also a risk factor for SIDS in babies.

Solution

Prioritise breathable materials: natural cotton, wool, and latex regulate temperature naturally. Pocket sprung mattresses allow better airflow than solid foam. Gel-infused foam suits children aged 8+. Avoid fully enclosed memory foam for young children — it traps the most heat. Maintain bedroom temperature at 16-18°C.

Transitioning from Cot to Bed

Important

Typically occurs between ages 2 and 3.5. Signs of readiness: climbing out of the cot, nearly toilet trained, physically outgrowing it, or a sibling needs it. Some specialists advise waiting until close to age 3. The transition introduces new safety considerations — the child can now get out of bed independently.

Solution

If the cot converts to a cot-bed, the same 70×140cm mattress fits both configurations. For a full bed, use bed guards for the first months. Consider placing the mattress on the floor initially. Secure furniture to walls, use cord-free blinds, maintain stair gates. If a new baby is arriving, transition at least 6 weeks before the due date.

UK Safety Standards

Safety Certification Quick-Reference

Every certification that matters when buying a children's mattress in the UK — what it tests, how to check, and whether it's legally required.

BS 7177

MANDATORY

British Standard 7177 — Fire Safety

Applies to:

All mattresses sold in the UK

What it tests:

Resistance to ignition from smouldering cigarettes (BS EN 597-1) and match-equivalent flames applied for 20 seconds (BS EN 597-2)

How to check:

Permanent sewn-in label on the mattress. It must remain attached for the mattress's lifespan.

Selling non-compliant mattresses is a criminal offence under the Furniture and Furnishings (Fire) (Safety) Regulations 1988.

BS EN 16890

Recommended

BS EN 16890:2017 — Cot Mattress Safety

Applies to:

Cot and crib mattresses (0-3 years)

What it tests:

Surface firmness (prevents face sinking), suffocation and entrapment risks, swallowing and choking hazards from loose components (stickers, zip pulls)

How to check:

Look for "BS EN 16890" on the product listing or label. Ask the retailer if not stated.

Not yet mandatory but strongly recommended by safety organisations. The Lullaby Trust advises firm, flat cot mattresses — this standard verifies firmness.

NBF Approved

Recommended

National Bed Federation Approved Mark

Applies to:

All mattresses (voluntary scheme)

What it tests:

Annual independent audits: BS 7177 compliance, material traceability, hygiene standards, manufacturing quality. Mattresses are purchased on the open market, flammability-tested, and cut open to verify composition claims.

How to check:

NBF Approved logo on the product or label. Member list at bedfed.org.uk.

The NBF (founded 1912) is the UK's official trade association. This mark is the closest thing to a quality "kite mark" for mattresses.

OEKO-TEX 100

Recommended

OEKO-TEX Standard 100 — Chemical Safety

Applies to:

All textiles and materials in the mattress

What it tests:

Tested against a list of over 1,000 potentially harmful substances including formaldehyde, pesticides, heavy metals, phthalates, and allergenic dyes

How to check:

OEKO-TEX label with certification number. Verify at oeko-tex.com/en/label-check.

Particularly important for children — their skin is thinner and more permeable than adults', meaning they absorb chemicals more readily from textiles in close contact.

CertiPUR

Recommended

CertiPUR — Foam Safety

Applies to:

Polyurethane and memory foam mattresses only

What it tests:

Foam is free from harmful heavy metals (mercury, lead), formaldehyde, flame retardants (TDCPP, TCEP), prohibited phthalates, and has low VOC emissions (< 0.5 mg/m³)

How to check:

CertiPUR label on foam mattresses. Database at europur.org.

Essential for any foam children's mattress. Without CertiPUR, you have no independent verification that the foam is free from harmful off-gassing chemicals.

GOTS / GOLS

Recommended

Global Organic Textile / Latex Standard

Applies to:

Organic mattresses only

What it tests:

GOTS: minimum 95% certified organic fibres, no toxic chemicals in processing. GOLS: minimum 95% certified organic raw material in latex.

How to check:

GOTS/GOLS logo with licence number. Verify at global-standard.org.

The premium standard for eco-conscious parents. Organic materials mean fewer potential skin irritants — relevant for children with eczema or chemical sensitivities. Expect to pay £300-800+ more.

Features Ranked

What to Look For in a Children's Mattress

Ranked by importance from safety-critical to beneficial.

UK Safety Certification (BS 7177)

100%

BS 7177 is the mandatory British Standard for mattress fire safety, required by law for all UK mattresses. It tests ignition resistance via smouldering cigarette (BS EN 597-1) and match flame (BS EN 597-2). All children's mattresses must display a permanent sewn-in compliance label. Non-compliance is a criminal offence. For cot mattresses, also look for BS EN 16890:2017 — this tests for suffocation, entrapment, choking hazards, and surface firmness.

Firm, Flat Support Surface

96%

The NHS recommends firm, flat mattresses for all children — particularly babies and toddlers where soft surfaces pose a suffocation risk. A medium-firm to firm surface (6-7/10) provides the structural support developing spines require. Pocket sprung and open coil mattresses are the best choices for growing children.

Hypoallergenic Materials

92%

With 1 in 20 young children sensitive to dust mites — and mattresses being a primary breeding ground — hypoallergenic materials are a health requirement. Natural latex, GOTS-certified organic cotton, and wool are inherently antimicrobial. CertiPUR certification ensures foam is free from harmful chemicals. OEKO-TEX Standard 100 confirms materials tested against 1,000+ substances.

Waterproof or Easy-Clean Design

90%

With 21% of five-year-olds and 8% of nine-year-olds experiencing bedwetting, liquid protection is essential. Modern TPU-backed protectors are breathable, silent, absorb up to 8 cups of liquid, and survive 300+ wash cycles. Budget £15-40 for a quality protector — it will save a £200-800 mattress.

Breathability & Temperature Regulation

85%

Children generate more heat per kg than adults, and their thermoregulation is less mature. Open coil and pocket sprung mattresses allow airflow through the spring cavity. Natural cotton and wool wick moisture naturally. Avoid dense all-foam construction for young children.

Durability & Longevity

80%

A quality children's mattress should last 8-10 years. Cheap mattresses sag within 2 years, failing growing bodies. Look for 10+ year warranties, high-density foam bases (35kg/m³+), and robust spring systems. Hybrid mattresses offer the best durability for active children.

Suitability Matrix

Mattress Type Suitability by Age

Not every mattress type suits every age. This matrix shows which types are safe and suitable at each stage of childhood.

Best choice

Suitable

Use with caution

Not recommended

Mattress Type	Baby 0-1	Toddler 1-3	Young 3-7	Older 8-12	Teen 13+
Pocket Sprung	Good if designed for cots	Best support for growing spine	Ideal: firm, breathable, responsive	Excellent base, may want comfort layer	Good, especially 1000+ springs
Open Coil	Budget-friendly cot option	Good budget choice	Adequate for lighter children	May sag with heavier children	Often insufficient for teen weight
Hybrid	Too thick for cots; foam layer risk	Generally too thick; foam layer unnecessary	Good from age 5+ if firm	Ideal: springs + thin comfort layer	Best all-round choice for teens
Memory Foam	Suffocation risk — face can sink in	Insufficient structural support	Still too conforming for growth plates	Acceptable from age 8+	Good for pressure relief
Latex (Natural)	Naturally firm, antimicrobial	Hypoallergenic, dust-mite resistant	Excellent for allergy-prone children	Durable, breathable, supportive	Responsive and long-lasting
Gel Foam	Same concerns as memory foam	Same concerns as memory foam	Only if firm and child runs very hot	Good cooling for hot sleepers	Good cooling + pressure relief

Pocket Sprung

Baby (0-1)

Good if designed for cots

Toddler (1-3)

Best support for growing spine

Young (3-7)

Ideal: firm, breathable, responsive

Older (8-12)

Excellent base, may want comfort layer

Teen (13+)

Good, especially 1000+ springs

Open Coil

Baby (0-1)

Budget-friendly cot option

Toddler (1-3)

Good budget choice

Young (3-7)

Adequate for lighter children

Older (8-12)

May sag with heavier children

Teen (13+)

Often insufficient for teen weight

Hybrid

Baby (0-1)

Too thick for cots; foam layer risk

Toddler (1-3)

Generally too thick; foam layer unnecessary

Young (3-7)

Good from age 5+ if firm

Older (8-12)

Ideal: springs + thin comfort layer

Teen (13+)

Best all-round choice for teens

Memory Foam

Baby (0-1)

Suffocation risk — face can sink in

Toddler (1-3)

Insufficient structural support

Young (3-7)

Still too conforming for growth plates

Older (8-12)

Acceptable from age 8+

Teen (13+)

Good for pressure relief

Latex (Natural)

Baby (0-1)

Naturally firm, antimicrobial

Toddler (1-3)

Hypoallergenic, dust-mite resistant

Young (3-7)

Excellent for allergy-prone children

Older (8-12)

Durable, breathable, supportive

Teen (13+)

Responsive and long-lasting

Gel Foam

Baby (0-1)

Same concerns as memory foam

Toddler (1-3)

Same concerns as memory foam

Young (3-7)

Only if firm and child runs very hot

Older (8-12)

Good cooling for hot sleepers

Teen (13+)

Good cooling + pressure relief

Age-Appropriate Guidance

Recommended Firmness by Age Group

Firmness needs change as children grow. Use this guide for your child's developmental stage.

Babies (0-1 year)

Firm (8-9/10)

NHS guidance: firm, flat mattress essential. Prevents sinking and suffocation risk (SIDS). Cot mattresses typically 10-15cm. No pillows, no duvets. "Feet to foot" position recommended.

Toddlers (1-3 years)

Medium-Firm to Firm (7-8/10)

Spine grows up to 1.5cm per night. Pocket sprung or open coil preferred. Avoid memory foam — it moulds to the body and may not provide adequate structural support.

Young Children (3-7 years)

Firm to Medium-Firm (6-7/10)

Peak growth period — maximum support needed. Most transition to a single bed around age 4-5. Pocket sprung mattresses are ideal at this age.

Older Children (7-12 years)

Medium to Medium-Firm (5-7/10)

Memory foam becomes acceptable. Medium firmness balances the support growing bones still need with the comfort children begin to prefer. Hybrids are excellent.

Teenagers (13+ years)

Medium (5-6/10), adjust by weight

Medium suits most teenagers. Over 10 stone → medium-firm. Over 13.5 stone → firm. Body weight and sleep position become the primary firmness determinants, similar to adult guidance.

The Weight Factor

Children are significantly lighter than adults, so a medium-firm mattress that feels solid to a child actually provides excellent support — their weight doesn't compress the system as much. This is why children don't need thick comfort layers or complex zoning. A straightforward, well-constructed medium-firm mattress with quality materials will outperform an expensive over-engineered adult design.

UK Size Guide

UK Children's Mattress Size Guide

Standard UK dimensions from cot to single. Always measure your bed frame — some manufacturers use non-standard sizes.

Cot

Birth to 3 years

60 × 120 cm

2'0" × 4'0"

Standard UK cot size. Always measure your frame — some nursery brands use non-standard dimensions. Depth: 10-15cm.

Cot Bed / Toddler

2 to 5 years

70 × 140 cm

2'3" × 4'6"

Cot beds convert by removing side bars — same mattress fits both. Most cost-effective transition option.

Shorty

3 to 7 years

75 × 175 cm

2'6" × 5'9"

Stepping stone between toddler and single. Fits smaller bedrooms and bunk beds. Max height for bunks: 15-16cm.

Small Single

4 to 7+ years

76 × 190 cm

2'6" × 6'3"

Same adult length but narrower — ideal for tight bedrooms. Smart choice when space is limited.

Single

5 years to adult

90 × 190 cm

3'0" × 6'3"

Most popular from age 5 onward. Lasts well into adulthood. Teens 6ft+ may need a Long Single (90×200cm).

Bunk Bed Safety Note

Maximum mattress height for bunk beds and mid-sleepers is typically 15-16cm — thicker mattresses bring the sleeping surface dangerously close to or above the guard rail. Check your manufacturer's specifications. Children under 6 should never sleep on the top bunk.

NHS Guidance

How Much Sleep Does Your Child Need?

NHS-recommended sleep durations by age. The bar shows the proportion of a 24-hour day spent sleeping.

Newborns (0-3 months)

14-17 hours(Including frequent naps)

0h24h

Infants (4-12 months)

12-16 hours(Including naps)

0h24h

Toddlers (1-2 years)

11-14 hours(Including naps)

0h24h

Pre-schoolers (3-5 years)

10-13 hours(Including naps)

0h24h

School-age (6-12 years)

9-12 hours(No naps needed)

0h24h

Teenagers (13-18 years)

8-10 hours(Often sleep-deprived)

0h24h

Why Sleep Quality Matters as Much as Quantity

During deep sleep, growth hormone is released in pulses, tissue repair occurs, and the brain consolidates learning — forming and strengthening neural pathways built during the day. Sleep-deprived children are more irritable, struggle to concentrate, and may develop behavioural difficulties. Long-term deprivation can lead to anxiety, depression, and appetite dysregulation. A mattress that supports uninterrupted deep sleep is fundamental to your child's wellbeing.

Practical Advice

Essential Tips for Parents

Practical guidance on choosing, protecting, and maintaining your child's mattress.

Never Use a Second-Hand Mattress

Hand-me-down mattresses lose structural support, harbour allergens (dust mites, mould, bacteria), and may have hidden sagging. The National Bed Federation advises against used mattresses for children. Some research has linked second-hand cot mattresses with increased SIDS risk.

Always Use a Waterproof Protector

Essential from day one — not just for bedwetters. Children spill drinks, sweat, and fall ill in bed. Without protection, liquids breed mould and permanent odour. Modern TPU-backed protectors are breathable, quiet, and machine-washable. Buy a spare.

Check Safety Certifications Before Buying

Every UK mattress must comply with BS 7177 — look for the sewn-in label. For cots, also look for BS EN 16890:2017. The NBF Approved mark means independent audits have been passed. CertiPUR and OEKO-TEX 100 certify chemical safety.

Match the Mattress to the Bed Frame

Gaps between mattress and frame can trap small limbs or heads — a genuine entrapment risk. Always measure internal frame dimensions. For cots, the gap must be no more than 3cm. Contact the bed manufacturer if in doubt.

Maintain a Consistent Sleep Routine

The NHS recommends consistent sleep/wake times within one hour, even at weekends. Bath → story → lights out signals the brain. Remove screens from bedrooms. Keep temperature at 16-18°C with blackout blinds or curtains.

Rotate the Mattress Every 3-4 Months

Children sleep in the same position nightly, creating body impressions. Rotate 180° every 3-4 months. Flip double-sided mattresses every 6 months. Single-sided mattresses: rotate only. Check manufacturer instructions.

Your Questions Answered

Frequently Asked Questions

Everything parents need to know about choosing the right mattress for their child.

Find the Perfect Mattress for Your Child

Take our 2-minute quiz for personalised recommendations based on your child's age, sleep needs, and specific concerns.

Take the Mattress Quiz Read Our Buying Guide

Best Mattresses for Kids UK 2026: Safety, Support & Growing Bodies

David Patel

In This Guide:

Age-Based Mattress Finder

Best Mattresses for Kids & Teenagers

Emma Original Elite

Emma Original Pro

Emma Original

Emma Original Lite

Emma Performance 26

Emma Performance 28

Emma Performance 30

Simba Hybrid Essential

Simba Hybrid

Simba Hybrid Pro

Simba Hybrid Luxe

Simba Hybrid Ultra

Eve Original

Eve Premium

Eve Original Hybrid

Eve Premium Hybrid

Eve Wunderflip Premium Hybrid

Eve Wunderflip Ultimate Hybrid

Nectar Memory Foam

Nectar Hybrid

Nectar Premier

Nectar Premier Hybrid

Silentnight Eco Comfort Breathe

Silentnight Mirapocket 1200

Silentnight Mirapocket 2000

Silentnight Geltex Ultra 3000

Silentnight UltraGel Cool-to-touch 3000

Silentnight Lift Replenish Hybrid 2000

Silentnight Premier Inn Mattress 2.0

Hypnos Orthos Support

Hypnos Woolton

Hypnos Pillow Top

Hypnos Royal Comfort

OTTY Aura Hybrid

OTTY Original Hybrid

OTTY Extra Firm Hybrid

OTTY Pure Hybrid

OTTY Pure Pro Hybrid

OTTY Pure+ Hybrid 4000

Children's Sleep Challenges & Mattress Solutions

Growing Bones & Developing Spine

Solution

Bedwetting (Nocturnal Enuresis)

Solution

Allergies, Eczema & Dust Mites

Solution

Temperature Regulation & Overheating

Solution

Transitioning from Cot to Bed

Solution

Safety Certification Quick-Reference

What to Look For in a Children's Mattress

UK Safety Certification (BS 7177)

Firm, Flat Support Surface

Hypoallergenic Materials

Waterproof or Easy-Clean Design

Breathability & Temperature Regulation

Durability & Longevity

Mattress Type Suitability by Age

Pocket Sprung

Open Coil

Hybrid

Memory Foam

Latex (Natural)

Gel Foam

Recommended Firmness by Age Group

The Weight Factor

UK Children's Mattress Size Guide

Cot

Cot Bed / Toddler

Shorty

Small Single

Single

Bunk Bed Safety Note

How Much Sleep Does Your Child Need?

Best Mattresses for Kids
UK 2026: Safety, Support & Growing Bodies