Sealy Support Firm Mattress |

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Sealy Support Firm Mattress
Sealy Support Firm Mattress
Sealy Support Firm Mattress
Sealy Support Firm Mattress thumbnail
Sealy Support Firm Mattress thumbnail
Sealy Support Firm Mattress thumbnail

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Sealy Support Firm Mattress


List Price £XXX.XX
23cm Depth PostureTech Core Support Springs Hand Tufted Made in The UK

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Features you'll love

Core Support system provides exceptional and responsive support all night long

Firm rating for a more rigid sleep surface but with no compromise on comfort

Super-soft Damask cover that looks as good as it feels

Hand-tufted to ensure fibres stay in position

Single-sided so no need to flip and turn

Made in the UK


Drawing on over 100 years’ experience and expertise, Sealy has created a mattress that offers all the support you need, with absolutely no compromise on comfort. Simple in design yet complex in construction, it combines modern materials with traditional manufacturing techniques that have been passed down through the generations. The firm rating makes it suitable for those who suffer from back pain, or for those who simply prefer a firmer feel. It’s also a single-sided option making it much lower maintenance than a double-sided mattress.

Posturepedic Spring System supports all night long

Sealy’s core support system is at the very heart of their mattresses. Using an advanced design that means the springs gradually get firmer as the pressure increases, the spring system helps to keep the spine in a neutral position and minimise pressure points on the hips and shoulders. The result is a better, more restful night’s sleep with less tossing and turning.

Posturepedic Spring System supports all night long image
Traditional methods for a better finish image

Traditional methods for a better finish

The Sealy Support Firm mattress uses a method called hand-tufting. This traditional method of upholstery uses the skill of the artisan to hand-secure the mattress fillings in place so that they don’t move around, which could result in uncomfortable lumps and bumps forming over time. All of the tufts are positioned by hand, running right through the mattress to secure all the loose fillings for the ultimate finish.

Hypo-allergenic for a healthier environment

The presence of dust, mites, and canker can quickly irritate the airways, especially if you suffer from allergies or medical conditions like asthma, COPD or rhinitis. The Sealy Support mattress is a hypo-allergenic option that prevents unwelcome guests like dust mites from taking up residence, ensuring your mattress stays cleaner and is a healthier environment. The Sealy Support Firm mattress is so good at it that it’s been endorsed by Allergy UK.

Hypo-allergenic for a healthier environment image

The mattress looks as good as it feels too, with a silky-soft Damask cover over the top and extra layers of fillings to create a cushioned feel. It is categorised as an orthopaedic mattress, designed to provide firm support right across the whole sleeping area. It is a single-sided mattress so there is no need to flip and turn it, but we do recommend that it is rotated every few months to prolong its lifespan and to prevent fibre compression. Made in the UK, it has a 5-year guarantee for your peace of mind.


PostureTech Core Support Springs

The PostureTech Core Support spring system assists and supports your pressure points, providing a softer feel that gradually gets firmer as pressure increases.

23cm Deep

This mattress is approximately 23cm deep.

Firm Support

Good for people who sleep on their front or back.

Orthopaedic Support

Designed to offer a firmer sleep surface, providing targeted support for your back and joints.

No Need To Turn

A single-sided mattress which does not need to be turned/flipped. One-sided mattresses should, however, be rotated head to toe regularly.

No Roll Together

Individual personal sleeping zones mean that you won't be disturbed if your partner rolls or moves, as you won't feel their motion. There's also no tendency to roll towards the middle of the mattress.

Hand Tufted

Tufts help to secure the luxury fillings in place, helping the mattress retain it's fullness and plumpness over time.

NBF Approved Product

Peace of mind and reassurance - the manufacturer of this item is an approved member of the National Bed Federation's Code of Practice.

Made in the UK

This item has been manufactured in the UK.

Fire Resistant - Low Hazard

This product conforms to the BS7177: 2008 standard for domestic use (low hazard) - ideal for use at home.

Warranty & Guarantee

Sealy 5 Year Guarantee

In the unlikely event of a defect in material or workmanship occurring within the 5 year guarantee period, we will arrange to repair or replace the item under complaint free of charge at our discretion.

Download warranty/guarantee information


Most of our mattresses are available for free next day delivery. Order before 5pm, and we will dispatch your mattress or bed the same day, for free next day delivery. You can also select another day of your choice in your basket. Don't forget to check out our range of additional services like room of choice delivery & mattress recycling - where we take your old unwanted mattress away.

About Sealy

For over 100 years, Sealy has been one of the world’s leading manufacturers of premium quality mattresses and beds. Each product has been designed with you in mind, aiming to provide you with exceptional comfort and the support you deserve to sleep soundly every night. At MattressNextDay, we’re proud to stock this prestigious brand.

To make sure your mattress meets your individual requirements, you can pick your preferred firmness rating, including soft, medium and firm, and you choose the size you need. We stock sizes small single, single, small double, double, kingsize and superking, so whether you need a mattress for your spare room or your own boudoir, we’ve got you covered.

Our Sealy mattresses are available with a range of useful and innovative features too. From memory foam filling, to posture support, to hypoallergenic qualities, to pressure relief technology, you won’t struggle to find the perfect mattress when you shop from our selection of Sealy products.

To accompany your mattress, why not go for one of our Sealy beds too? We have a range of models for you to pick from, including our popular Sealy divan beds.

Need more information? Get in touch with us today. Our bed specialists are on hand to answer your questions. Simply give us a call or fill out our online contact form. With free next day delivery on all orders over £150 placed before 5pm, you could be enjoying your new bed setup much sooner than you think.

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Delivery Upgrades

Old Mattress Removal

We'll take away your old mattress when we deliver your new one, and then recycle it.

Room of Choice Delivery

We'll take your item to your preferred room of choice within the property.

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