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Sealy Serenity Mattress - image 1 Sealy Serenity Mattress - image 2 Sealy Serenity Mattress - image 3 Sealy Serenity Mattress - image 4 Sealy Serenity Mattress - image 5 Sealy Serenity Mattress - image 6

Sealy Serenity Mattress

5/5
UniCased edge support keeps the firmer sleeping surface supported right to the sides, helped by ComfortCore and InfiniLux layers.
iconFirmer
iconInfiniLux™
iconAlignSupport® Coil
icon30cm depth
  • AlignSupport® spring system
  • ComfortCore™ and InfiniLux™ layers offer comfort
  • UniCased® firm edge support
  • 7 Year Guarantee
Price Promise

Seen it cheaper somewhere else? We'll match it — that's our Price Promise.

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£1359.15
without promo £1599
Save £239.85
Use promo code SNOOZE15 for quoted price
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Description
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Available in 12 Showrooms
7 Year Guarantee
Flexible Credit Options
The Verdict

What 13 sleepers really think

Rated 5/5 from 13 verified reviews
The Sealy Serenity mattress receives praise for its exceptional comfort and impressive support, especially benefiting those with back or hip issues. Users find it remarkably firm yet cozy, delivering a restful sleep experience. The mattress remains cool during use, ideal for naturally warm sleepers. A minor downside mentioned is the difficulty in finding perfectly fitting sheets due to its depth, though many face this issue with similar products.

AI-generated from the text of customer reviews

Why This Mattress

Why buy the Sealy Serenity Mattress?

Every mattress is different. Scan for the ones that sound like you — if two or more fit, this is your mattress.

Best For
Back + Stomach
Back or front, never sure?
Steady, even support that keeps your spine level whether you settle on your back or your front.
Helps with
Allergies
Wake up itchy or sneezy?
Hypoallergenic fillings and covers help keep dust mites and allergens at bay - ideal for allergy-prone sleepers.
Helps with
Pressure Relief
Achy hips or shoulders?
Cushioning comfort layers spread your weight evenly, easing pressure around hips and shoulders.
Thermal Control
Cooling
Sleep hot?
Breathable layers draw heat away from you overnight, for a cooler sleep if you tend to run warm.
Suitability
Adults
Buying for a grown-up bed?
Built for full-grown sleepers, with the depth and support to take adult weight night after night.
How It Feels

How firm is it?

Firmer

Firmer is the level of support to the body, suitable for average to heavily weighted people. This is not a comfort rating.

About the Brand
★ 4.69 brand rating

Sealy is famous for its award-winning mattresses, crafted through 20 years of collaboration with the International Orthopaedic Advisory Board. Featuring innovative technologies like the AlignSupport® Coil System and memory foam, Sealy ensures targeted support and comfort for a restful night’s sleep for every type of sleeper.

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Real Sleepers

What our customers say

5.0
Product Rated 5.0 Stars
13 reviews
Average Customer Ratings
Comfort4.8
Durability4.7
Quality4.8
Value for money4.4
Rating Snapshot
5 stars
13
4 stars
0
3 stars
0
2 stars
0
1 stars
0
Excellent13
J e Thompson
Customer Rated This 5 Stars 5/5
25 Apr 2026
Very expensive even with the 10% off but absolutely love it i suffer with rapid degenerate decease of spine and neck also purchased 2 luxery pillows. I can not recommend it enough i have never slept better I am only 4'10" so purchased a work out step for safety as 73yr old at least now I will rest and sleep a hundred percent better . Gary was very helpful and considerate just a little confused at times as kept pricing as king size when I had to keep reminding him it was a double that was required
Value5
Comfort5
Quality5
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Michael Dunmore
Customer Rated This 5 Stars 5/5
27 Jun 2025
We purchased this make of mattress as our previous one was the same make but this was an updated version and it didn’t disappoint . Most comfortable mattresses, made us realise how uncomfortable our old one was after it so long. Long overdue a new one! Only problem is it’s difficult to purchase sheets that fit perfectly because of the depth but that’s true of a lot of mattresses.
Comfort5
Value5
Quality5
Verified By trustpilot verification
R Deroy-facey
Customer Rated This 5 Stars 5/5
16 Aug 2025
Mattress is very comfortable with great support, particularly if you are experiencing back issues. There is no sagging or lumps just great firmness across the entire surface. The corners are also very supportive, with no collapsing, making it comfortable when sleeping, and perfect for sitting on.
Comfort5
Value5
Quality5
Durability5
Verified By trustpilot verification
Andy Cullum
Customer Rated This 5 Stars 5/5
05 Jul 2025
Originally bought a British bed company mattress which was very comfortable but was too hot for me - this keeps me cooler and is equally as comfortable- im naturally a hot person
Value4
Comfort5
Quality4
Verified By trustpilot verification
J Ward
Customer Rated This 5 Stars 5/5
24 Apr 2026
So supportive and comfortable mattress. Have slept so much better since sleeping on this mattress. No more hip pain in the night .really pleased with this mattress
Value4
Quality5
Durability5
Comfort5
Verified By trustpilot verification
Alan Chamberlain
Customer Rated This 5 Stars 5/5
09 Jul 2025
Really comfortable. Cannot comment on durability as have only had it a few months but so far so good. Felt it slightly overpriced.
Comfort5
Value3
Quality5
Verified By trustpilot verification
Viewing 1 to 6 of 13
Our Promise

The Serenity Mattress has

A 60-night sleep trial Sleep on it at home — love it, or exchange it between nights 30 and 60.
A 7 year guarantee See exactly what's covered, and for how long.
Price Match Promise Seen it cheaper somewhere else? We'll match it.
·
Good To Know

Frequently asked questions

What type of spring system does the Serenity mattress use?
The Serenity mattress features the AlignSupport® spring system, which is designed to provide optimal support and alignment for your spine.
Can you tell me about the comfort layers in the Serenity mattress?
The Serenity mattress includes ComfortCore™ and InfiniLux™ layers, which work together to create a comfortable sleeping surface that adapts to your body.
Is the Serenity mattress suitable for allergy sufferers?
Yes, the Serenity mattress is recommended for allergy sufferers due to its special fillings and fabric that help reduce allergens.
Do I need to turn the Serenity mattress regularly?
The Serenity mattress is one-sided, so there’s no need to turn it over, but it is recommended to rotate it occasionally to maintain its quality.
What kind of edge support does the Serenity mattress have?
The Serenity mattress features UniCased® firm edge support, which helps to enhance the sleeping surface and provides additional stability.
What is the warranty period for the Serenity mattress?
The Serenity mattress comes with a 7-year guarantee, giving you peace of mind regarding its durability and quality.
Is the Serenity mattress flammability rated?
Yes, the Serenity mattress is rated as Source 2 for low hazard, making it suitable for general domestic use in terms of flammability.
How does the temperature-regulating feature of the Serenity mattress work?
The Serenity mattress is designed with SmarTex® and ProShield® technology, which effectively disperse heat from the skin, ensuring a cool and fresh sleeping environment. This temperature-regulating property helps maintain optimal comfort throughout the night, regardless of the season. As a result, you can enjoy consistent sleep quality without being affected by fluctuations in temperature.
How does the Serenity mattress feel in terms of firmness?
The Serenity mattress is designed with a supportive feel due to its spring system and edge support, making it suitable for those who prefer a firmer sleeping surface.
What materials are used in the Serenity mattress?
The Serenity mattress incorporates high-quality materials, including the AlignSupport® coils, ComfortCore™, InfiniLux™ layers, along with allergy-friendly fillings and fabric.
Better Together

Also paired with

Still Deciding?

Other mattresses to consider

More To Explore

Where to next?

Sealy Mattresses
Sealy Firmer Mattresses
Sealy AlignSupport® Coil Mattresses
Sealy Sealy MOTM Range

60-night sleep trial: exchanges only, not refunds. Activated by purchasing a mattress protector at the point of order. Request your exchange between nights 30 and 60 of the trial; a £50 exchange fee applies. Full terms.

Recommendation rate: the percentage of verified Trustpilot reviews for this product with a rating of 4 stars or more, rounded down.

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