What firmness mattress is best for side sleepers?

For most side sleepers weighing between 9-14 stone, a firmness of 4-6 (medium-soft to medium) provides the best combination of pressure relief and spinal alignment. This range allows your shoulders and hips to sink into the comfort layers while your waist remains supported. Lighter side sleepers (under 9 stone) should go softer (3-4), while heavier side sleepers (over 14 stone) need more support (5.5-7) to prevent excessive sinkage. The key principle: your spine should be horizontally straight when viewed from behind—if your hips are higher or lower than your shoulders, the firmness is wrong.

Is memory foam or hybrid better for side sleepers?

Both can work excellently, but they offer different experiences. Memory foam excels at contouring closely around shoulders and hips, creating a "cradled" sensation with superior pressure relief and motion isolation. However, it can sleep warm and make position changes feel slow. Hybrids combine a pressure-relieving foam comfort layer with a pocket coil base, offering better airflow, easier position changes, and stronger edge support. For dedicated side sleepers who rarely move, memory foam is often preferred. For side sleepers who also spend time on their back or shift frequently, hybrids provide more versatility.

Why do my shoulders hurt from side sleeping?

Shoulder pain in side sleepers almost always comes from excessive compression. When you sleep on your side, your entire upper body weight presses your shoulder into the mattress. On a too-firm surface, the rotator cuff tendons and bursa are compressed between the humerus (upper arm bone) and scapula (shoulder blade). This sustained compression restricts blood flow, causes inflammation, and over time can lead to impingement syndrome or rotator cuff damage. The solution is a mattress soft enough at the surface to let your shoulder sink in rather than being pressed flat—memory foam, pillow tops, or soft hybrid comfort layers all help.

Do side sleepers need a soft mattress?

Side sleepers need a mattress that's softer than what back or stomach sleepers require, but "soft" is relative to your body weight. A medium (5-6) mattress may provide adequate pressure relief for an 11-stone side sleeper, while the same mattress feels too firm for a 9-stone side sleeper. The principle is: your shoulders and hips must sink enough to maintain horizontal spinal alignment. What matters isn't the absolute softness but whether the mattress allows appropriate sinkage at your pressure points while supporting your midsection. Avoid truly soft mattresses (3 or below) if you weigh over 13 stone—you'll likely bottom out.

What pillow should side sleepers use?

Side sleepers need a thick, supportive pillow with a loft of approximately 10-15cm to fill the gap between the ear and the mattress. The goal is keeping your cervical spine (neck) in a straight line with your thoracic spine—your head should be neither pushed up nor allowed to drop. Memory foam and latex pillows maintain their shape better than down or fibre pillows, which can compress overnight. Some side sleepers prefer contoured pillows with a raised edge that supports the neck curve. Critically, your ideal pillow height depends on your mattress: if your shoulder sinks deeply, the gap is smaller and you need a thinner pillow.

Should I sleep on my left or right side?

Both sides are fine for most people, and alternating is ideal to prevent asymmetric pressure patterns. However, there are medical considerations. Sleeping on your left side offers specific benefits: it aids digestion by allowing gravity to assist food movement through the digestive tract, reduces acid reflux by keeping the stomach below the oesophagus, and may improve lymphatic drainage. Pregnant women are advised to sleep on their left side to improve blood flow to the uterus. People with heart conditions should consult their doctor, as some find left-side sleeping uncomfortable due to cardiac pressure awareness.

How do I stop my arm going numb when side sleeping?

Arm numbness results from compression of the brachial plexus nerve bundle or blood vessels in the shoulder area. Solutions: 1) Choose a mattress that allows your shoulder to sink in, reducing compression. 2) Don't sleep with your arm directly under your body—keep it slightly forward. 3) Hug a pillow to keep your upper arm elevated and your shoulder joint open. 4) Avoid bending your wrist or elbow at extreme angles. 5) If numbness persists despite mattress changes, consult a doctor—persistent numbness may indicate thoracic outlet syndrome or cervical disc issues that need medical attention.

Is side sleeping bad for your spine?

Side sleeping is actually one of the healthiest sleep positions for spinal health when properly supported. Research shows it decreases intervertebral disc pressure by up to 25% compared to stomach sleeping and promotes optimal cerebrospinal fluid drainage. The key is "properly supported"—your mattress must allow your shoulders and hips to sink while maintaining horizontal spinal alignment. Problems arise when the mattress is wrong for your body, not from the position itself. Side sleeping is particularly recommended for people with sleep apnoea, acid reflux, and during pregnancy.

Do zoned mattresses help side sleepers?

Yes—zoned mattresses are arguably the single most beneficial mattress feature for side sleepers. A zoned system provides softer support under the shoulders (allowing them to sink in) and firmer support under the hips and lumbar region (preventing excessive sinkage). Research published in Applied Ergonomics found that custom-zoned mattresses produced spinal alignment of just 4.1° deviation versus 8.9° on uniformly firm mattresses. This means less spinal curve, less strain, and better sleep. Look for mattresses that specifically mention shoulder and hip zoning rather than just "zoned support."

Can side sleeping cause hip pain?

Yes, if your mattress doesn't provide adequate hip cushioning. The greater trochanter (bony prominence on the outside of your hip) bears significant pressure during side sleeping. On a too-firm mattress, this concentrated pressure can irritate the trochanteric bursa, leading to bursitis—a painful inflammatory condition. The solution is a mattress with sufficient comfort-layer depth to cushion the hip (at least 5-7cm), combined with a knee pillow to maintain hip alignment. If you have existing hip problems, a medium-soft mattress (4-5) with zoned hip support provides the best relief.

What mattress type is worst for side sleepers?

Traditional firm innerspring (open coil) mattresses are the worst choice for side sleepers. They offer minimal contouring, high pressure-point concentration, and poor motion isolation. Open coil springs don't respond independently, so your shoulder and hip can't sink in without pulling the entire surface area. Very firm all-foam mattresses are also problematic—they resist compression at pressure points. The best types for side sleepers are: memory foam (excellent pressure relief), hybrids with soft comfort layers (good balance), and natural latex (responsive contouring). Always prioritise mattresses specifically marketed for side-sleeper suitability.

Which mattress should a UK side sleeper buy first in 2026?

If you are around Sarah Mitchell’s 62kg and your shoulder wakes you, buy Emma Original Elite on a sale and use the 200-night trial. If foam hugs make you hot and you already tried a cheaper Simba, buy Hybrid Luxe. If you want foam without Emma money, Eve Original. If you want a year to send it back, Nectar Classic Memory Foam. If you share the bed, start on Emma Original — not Elite. Do not pay full RRP. Open the official brand shop from the shortlist above.

Should I pay full price for a side-sleeper mattress?

No. Emma, Eve, Simba and Nectar run almost-constant UK sales. Elite from-prices we logged sit well under the printed RRP. Wait a week if the ticket looks like a quiet Tuesday. The trial is the product — 200 nights on Emma/Eve/Simba, 365 on Nectar. A weekend lie-down in a shop is not that.

How should side sleepers position their legs?

The ideal leg position is with knees slightly bent (about 20-30 degrees) and a pillow placed between them. This maintains hip-width spacing, keeps the pelvis neutral, and prevents the top leg from dropping forward and rotating the lumbar spine. Avoid the full foetal position (knees pulled to chest) as this rounds the spine and can strain the lower back. For added hip stability, use a contoured knee pillow that stays in place better than a regular pillow. Some side sleepers benefit from a body pillow that supports both the knees and the upper arm simultaneously.

UK testing team. Sarah on her side.

Sarah Mitchell, James Wright, Emma Thompson, David Patel, Rachel Adams. Sarah Mitchell is 62kg, side. We buy the beds. How we test

Updated 5 September 2026 · Buy list first

Best Mattress for Side Sleepers UK 2026Six to buy. Official shop. Use the trial.

Shoulder numb by 6am? Do not start with a 26-minute essay. Pick one of six James Wright’s team slept on, open the official UK shop, and use the trial as the product. Sarah Mitchell is 62kg, founder & editor-in-chief — if her shoulder sits perched, yours will too. James Wright is the lead at 86kg. David Patel at 104kg is why Elite can be a yes and a no on the same page.

Side sleeping still concentrates most of your weight on two bones. The mattress has to let those drop without dumping the waist. The shortlist is below. The firmness finder, type matrix, and setup guide are still here if you need them. If you already know you want the AirGrid shoulder pocket, skip to Emma Original Elite and check the live price.

See the 6 to buy Shop Elite now

74%

UK Adults Side Sleep

Approximately 74% of British adults spend at least part of the night on their side, making it the most common sleep position by a significant margin.

60%

Weight on Two Points

Side sleeping concentrates roughly 60% of your body weight on just two areas—shoulders and hips—creating the highest pressure-point demands of any sleep position.

25%

Less Disc Pressure

Research shows side sleeping decreases pressure within intervertebral discs by up to 25% compared to stomach sleeping, reducing the risk of disc herniation.

4-5

Ideal Firmness Range

Most side sleepers find their best comfort and alignment at a firmness of 4-5 (medium-soft to medium), though body weight modifies this significantly.

Expert Review

Sarah Mitchell

Founder & Editor-in-Chief

Former Sleep & Wellness Editor, The Telegraph

Sarah is the lighter side sleeper on our trial panel: 62kg / 9st 11lb, 165cm. If her shoulder feels perched, lighter side sleepers will too. She founded this site after covering sleep at The Telegraph.

Published: 27 January 2026

Updated: 5 September 2026

12 min to buy · full guide below

Buy list · September 2026

The six to buy

Six mattresses, each with an official shop link and a night from a named tester. If none of these fit, you are probably shopping for a different problem.

If you

Shoulder numb, ~62kg, you run warm

Buy Emma Original Elite

If you

Want more hug than a 26cm Performance

Buy Emma Performance 28

If you

Simba bounce, Pro felt perched

Buy Simba Hybrid Luxe

If you

You already want foam, not springs

Buy Eve Original

If you

You want a year to send it back

Buy Nectar Classic Foam

If you

14+ stone, or you share the bed

Buy Emma Original

Buy this first

From £649·Medium-soft·200 nights

Emma

Emma Original Elite

AirGrid lets Sarah Mitchell’s 62kg shoulder drop without the slow foam swamp. Wait for the sale. Do not pay RRP.

Sarah Mitchell · 62kg · Side sleeper — this is the one for her. Shop it.

Buy if

Hot side sleeper around 62kg. Shoulder or hip wakes you.

Skip if

You sleep on your front like David Patel, or you live on the edge putting socks on.

Shop Emma — check price Read the review

Deeper dump

From £799·Medium·200 nights

Emma

Emma Performance 28

Emma’s side-sleeper Performance: extra MemoryAdapt without the 30cm sheet tax. If Elite is sold out of your size, start here — not on the 30 unless you can name the shoulder that needs 4cm more foam.

Sarah Mitchell · 62kg — deeper contour than 26; skip 30 unless the 28 still perched you.

Buy if

You want more hug than Performance 26 and you still want ordinary extra-deep sheets.

Skip if

A Performance 26 would do the same job for less. You already liked Elite.

Shop Emma — check price Read the review

No foam hug

From £1,249·Medium·200 nights

Simba

Simba Hybrid Luxe

The Simba for a jammed shoulder like Sarah Mitchell’s. Pro can feel tight at 62kg. Extra-deep sheets are a tax. Do not start here if you have never tried Hybrid.

Sarah Mitchell · 62kg — Pro was tight; Luxe is the Simba that fixes it.

Buy if

You already tried Simba Hybrid or Pro and the shoulder still sat perched.

Skip if

You have not slept on a cheaper Simba. David Patel at 104kg wanted a firmer stop — stay on Pro.

Shop Simba — check price Read the review

Foam hug

From £599·Medium-firm hug·200 nights

Eve

Eve Original

Classic Eve foam. Shoulder in, no 2014 swamp. James Wright still ran warm. David Patel at 104kg sank — no spring stop.

Sarah Mitchell · 62kg — shoulder went in. If you already run hot, wrong Eve.

Buy if

Lighter side sleeper around Sarah Mitchell’s 62kg who already wants foam, not bounce.

Skip if

You sleep hot. You want a bench edge. You need a spring floor.

Shop Eve — check price Read the review

365-night net

From £199·Medium-firm foam·365 nights

Nectar

Nectar Classic Memory Foam

Cheapest current Nectar. Slow hug. 365 nights is the product. James Wright’s line: best basket, worst August. Guest room or Sarah Mitchell’s weight if she already wants foam.

Sarah Mitchell · 62kg — isolation yes; August still a swamp.

Buy if

You want a year to decide, a small double, and contour without bounce.

Skip if

Hot sleeper. Nightly 95kg bed. Anyone who wants springs — that is Classic Hybrid.

Shop Nectar — check price Read the review

Heavier side / couples

From £349·Medium-firm·200 nights

Emma

Emma Original

The Emma James Wright puts most households on. More stop than Elite. Ordinary sheets. Share the bed? Start here — not on the hugging AirGrid.

James Wright · 86kg · Back/side combination — the default Emma, not the Elite tax.

Buy if

Mixed side/back. Couple with a weight gap. You want bounce under the foam.

Skip if

Dedicated 62kg side sleeper with a numb shoulder — that is Elite.

Shop Emma — check price Read the review

Still stuck? Two minutes.

Weight, heat, budget. Then we point at one of the six — not a 40-model grid.

Take the quiz

In This Guide:

The 6 to buy Firmness Finder Full side-sleeper list Type Suitability Matrix Position Setup Guide Common Problems What to Look For Firmness by Weight Position Tips FAQs

Interactive Tool

Body Weight Firmness Finder for Side Sleepers

Select your body weight range to get a personalised firmness recommendation, ideal mattress type, comfort layer guidance, and expert tips for side sleepers at your weight.

Our Tested Picks

Best Mattresses for Side Sleepers

Every current model we cover, filtered for side sleeping. If you came here to buy, start with the six-mattress shortlist above. This longer list is for comparing everything else.

Filters:

32 mattresses found

32 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 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 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 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

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 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

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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

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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

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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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Data Comparison

Mattress Type Suitability Matrix for Side Sleepers

How each mattress construction type performs across six key metrics that matter most for lateral pressure relief. Based on our pressure mapping and alignment data.

Best (80+)

Suitable (65-79)

Caution (50-64)

Avoid (<50)

Type	Shoulder Relief	Hip Cushioning	Spinal Alignment	Motion Isolation	Responsiveness	Edge Support	Verdict
Memory Foam	95	92	82	95	55	55	Best for pressure relief — moulds precisely around shoulders and hips. Can sleep warm and feels slow to reposition.
Hybrid	88	85	90	78	82	88	Best all-rounder — combines foam pressure relief with spring support and airflow. Ideal if you also sleep on your back.
Latex	82	80	85	68	92	78	Responsive and cool — provides "push-back" contouring rather than sinking. Excellent for side sleepers who shift frequently.
Pocket Sprung	60	62	72	70	85	85	Adequate with quality pillow-top — springs alone lack contouring. Needs a thick comfort layer (5cm+) to work for side sleepers.
Open Coil	30	35	40	30	65	50	Not recommended — interconnected springs create pressure hotspots at the shoulder and hip. Worst type for side sleepers.

Memory Foam

Best for pressure relief — moulds precisely around shoulders and hips. Can sleep warm and feels slow to reposition.

Shoulder Relief

Hip Cushioning

Spinal Alignment

Motion Isolation

Responsiveness

Edge Support

Hybrid

Best all-rounder — combines foam pressure relief with spring support and airflow. Ideal if you also sleep on your back.

Shoulder Relief

Hip Cushioning

Spinal Alignment

Motion Isolation

Responsiveness

Edge Support

Latex

Responsive and cool — provides "push-back" contouring rather than sinking. Excellent for side sleepers who shift frequently.

Shoulder Relief

Hip Cushioning

Spinal Alignment

Motion Isolation

Responsiveness

Edge Support

Pocket Sprung

Adequate with quality pillow-top — springs alone lack contouring. Needs a thick comfort layer (5cm+) to work for side sleepers.

Shoulder Relief

Hip Cushioning

Spinal Alignment

Motion Isolation

Responsiveness

Edge Support

Open Coil

Not recommended — interconnected springs create pressure hotspots at the shoulder and hip. Worst type for side sleepers.

Shoulder Relief

Hip Cushioning

Spinal Alignment

Motion Isolation

Responsiveness

Edge Support

Interactive Tool

Lateral Sleep Setup Guide

Your pillow arrangement and body position matter as much as your mattress. Select a setup below to see detailed recommendations for pillow height, knee support, arm placement, and alignment.

Understanding the Challenges

Common Side Sleeper Problems & Solutions

Side sleeping creates specific challenges that the right mattress and sleep setup can address. Here's what to watch for.

Shoulder Pain & Impingement

Very Common

The most common side-sleeper complaint. When your shoulder is compressed between your body weight and a too-firm mattress, the rotator cuff tendons and bursa are squeezed between the humerus and scapula. Over time, this sustained compression can cause inflammation, microtears, and chronic impingement syndrome.

Solution

Choose a mattress that allows your shoulder to sink 3-5cm into the comfort layer. Memory foam and pillow-top mattresses excel here. The shoulder should "nest" into the surface rather than being pressed flat against it.

Hip Pain & Bursitis

Very Common

Your hip joint bears significant weight when side sleeping. On a mattress that's too firm, the greater trochanter (the bony prominence on the outside of your hip) presses hard against the surface, restricting blood flow and irritating the bursa. This can lead to trochanteric bursitis—a painful inflammatory condition.

Solution

Adequate cushioning at the hip allows the joint to sink without misaligning your spine. A knee pillow helps by separating the legs and reducing rotational stress on the hip. Zoned mattresses with softer hip zones are particularly effective.

Arm Numbness & Tingling

Common

Numbness in the arm you're lying on is caused by compression of blood vessels and nerves—particularly the brachial plexus nerve bundle. If your mattress doesn't allow your shoulder to sink in, the arm is compressed between your torso and the mattress surface, cutting off circulation.

Solution

A softer comfort layer reduces arm compression. Avoid sleeping with your arm directly under your body. Hugging a pillow helps keep your upper arm slightly forward, opening the shoulder joint and reducing nerve compression.

Spinal Misalignment

Common

Your spine should remain horizontally straight when viewed from behind in the side sleeping position. If your mattress is too firm, your hips are pushed upward relative to your waist, creating a lateral spinal curve. If too soft, your hips sink excessively, creating the opposite curve. Both scenarios strain spinal ligaments and muscles.

Solution

A mattress with the correct firmness for your body weight allows your shoulders and hips to sink proportionally while supporting your waist. Zoned construction—softer under shoulders, firmer under hips—provides the most effective alignment for side sleepers.

Neck Pain

Moderate

Neck pain in side sleepers is usually a pillow problem, not a mattress problem—but the two interact. If your shoulder sinks too deeply (mattress too soft) or not enough (too firm), the gap between your head and the mattress changes, and your pillow may no longer provide proper cervical support.

Solution

Use a pillow that fills the exact gap between your ear and the mattress when your shoulder has sunk to its natural position. Most side sleepers need a thicker, firmer pillow (10-15cm loft) than back sleepers. Reassess your pillow whenever you change your mattress.

Facial Wrinkles & Skin Pressure

Minor

While less medically serious, sleeping with your face pressed against a pillow accelerates facial wrinkle formation. The repeated compression and shearing forces on facial skin can contribute to sleep lines that eventually become permanent.

Solution

Use a silk or satin pillowcase to reduce friction. Consider a contoured pillow that supports your neck without pressing against your face. Some side sleepers benefit from a "beauty pillow" with cut-out zones that minimise facial contact.

Mattress Features Guide

What to Look For in a Side Sleeper Mattress

These features matter most for side sleepers, ranked by importance from our testing data.

Pressure-Relieving Comfort Layers

95%

The most critical feature for side sleepers. Look for at least 5-7cm of quality comfort material—memory foam, latex, or micro-coils—above the support core. This layer must allow your shoulders and hips to sink in enough to maintain spinal alignment while distributing pressure evenly.

Zoned Support System

90%

Zoned mattresses use different firmness levels across the sleeping surface—softer under shoulders and legs, firmer under the hips and lumbar region. Research shows zoned systems produce the best spinal alignment for side sleepers, with one study finding they reduced thoracolumbar angle to just 4.1° versus 8.9° on flat-firmness mattresses.

Medium to Medium-Soft Firmness

88%

Most side sleepers perform best on mattresses rated 4-6 on the firmness scale. Lighter sleepers (under 10 stone) should aim for 3-5; average weight (10-14 stone) for 4-6; and heavier sleepers (over 14 stone) for 5-7. The key is adequate sink at shoulders and hips without excessive sinkage at the waist.

Motion Isolation

75%

Side sleepers tend to change positions more frequently than back sleepers, making motion isolation important—especially for couples. Memory foam and pocket spring constructions absorb movement effectively, preventing position changes from disturbing your partner.

Responsive Surface

70%

Side sleepers shift between left and right sides throughout the night. A mattress that's too slow to respond (like very dense memory foam) can make position changes feel effortful. Look for responsive materials—latex, micro-coils, or modern quick-recovery foams—that adapt as you move.

Adequate Edge Support

65%

If you sleep near the edge of the bed (common when sharing), you need a mattress that maintains its support right to the edges. Hybrid mattresses with reinforced perimeter coils tend to offer the best edge support, preventing the "rolling off" sensation.

Personalised Guidance

Recommended Firmness for Side Sleepers by Body Weight

Your body weight determines how much you compress the comfort layers—use this guide to find your ideal firmness.

Under 9 stone (57kg)

3-4 (Soft)

Lighter side sleepers need softer mattresses to allow adequate shoulder and hip sinkage. A medium mattress may feel firm to you.

9-11 stone (57-70kg)

4-5 (Medium-Soft)

The sweet spot for average-weight side sleepers. Sufficient cushioning for pressure points with enough support for alignment.

11-14 stone (70-89kg)

5-6 (Medium)

Slightly firmer to prevent excessive hip sinkage. Look for zoned support to ensure shoulders still get adequate cushioning.

14-18 stone (89-114kg)

5.5-6.5 (Medium to Medium-Firm)

Heavier side sleepers need more support to prevent bottoming out, but still need enough comfort layer depth for pressure relief.

Over 18 stone (114kg+)

6-7 (Medium-Firm)

At higher weights, even side sleepers need firmer support. Prioritise deep comfort layers (8-10cm) above a firm support core.

These Are Starting Points, Not Rules

Body weight is the strongest predictor of ideal firmness, but shoulder width, hip width, and personal preference also matter. Someone with broad shoulders needs more shoulder sinkage than someone with narrow shoulders at the same weight. Always use your trial period (100-200 nights) to validate that the firmness is right for your specific body shape.

Optimise Your Sleep Position

Side Sleeping Tips for Better Comfort

The right mattress is essential, but these additional adjustments can further improve your side-sleeping experience.

Pillow Height Matters Enormously

Your pillow must fill the exact gap between your ear and the mattress. Measure from the point of your shoulder to the side of your neck—this is roughly the loft you need. Most side sleepers need a 10-15cm loft pillow. Too thin: your head drops, straining your neck. Too thick: your head is pushed up, creating the opposite strain. Reassess whenever you change your mattress, as different shoulder-sink depths change the gap.

Use a Knee Pillow

Placing a pillow between your knees maintains hip and pelvic alignment, preventing lumbar rotation and reducing stress on the sacroiliac joints. Without it, your top knee drops, pulling your pelvis forward and twisting your lower spine. A firm, contoured knee pillow is better than a regular pillow, which tends to slip out during the night.

Hug a Pillow for Shoulder Relief

Wrapping your arms around a pillow (or body pillow) in front of your chest prevents your upper shoulder from rolling forward and compressing the lower shoulder joint. This simple change opens the chest, improves breathing, and significantly reduces shoulder impingement pressure. It also prevents you from tucking your hand under the pillow or your body.

Alternate Sides Regularly

Sleeping exclusively on one side creates asymmetric pressure and wear patterns—both on your body and your mattress. Try to alternate between left and right sides. Sleeping on your left side has additional health benefits: it aids digestion, reduces acid reflux, and improves lymphatic drainage. However, the best side is the one that feels most comfortable.

Keep Your Spine Straight, Not Curled

Many side sleepers curl into a foetal position, which rounds the spine and can strain the lower back and compress the diaphragm. Try to keep your body relatively straight—knees slightly bent (not pulled to chest), spine elongated rather than curved, and chin neutral rather than tucked. A body pillow along your front helps maintain this position.

Pre-Bed Shoulder and Hip Stretches

A simple 5-minute stretching routine before bed can reduce overnight pressure buildup. Focus on shoulder rolls, gentle chest openers, hip flexor stretches, and gentle spinal twists. These help release the tension that accumulates during the day, so you start the night with relaxed muscles rather than already-tight tissues.

Your Questions Answered

Frequently Asked Questions

Everything side sleepers need to know about choosing the right mattress.

Pick one. Shop it. Use the trial.

Shoulder first: Elite. Deeper dump: Performance 28. No foam hug: Luxe. Foam on a budget: Eve Original. Year to decide: Nectar. Heavier or a couple: Emma Original. Do not pay RRP.

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