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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.
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.
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.
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.
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.
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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.
Just £ per month, 0% finance
18+, T&Cs apply, Credit subject to status.
Spend over £400 and spread the cost
18+, T&Cs apply, Credit subject to status.
Free Delivery in
Place your order now and we'll contact you to arrange delivery when your order is ready for despatch. You can then choose our popular next day delivery or select a day & time of your choice and get delivery when it's convenient for you.
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| Size | Imperial | Metric |
|---|---|---|
| Small Single | 2'6" x 6'3" | 75cm x 190cm |
| Single | 3' x 6'3" | 90cm x 190cm |
| Small Double | 4' x 6'3" | 120cm x 190cm |
| Double | 4'6" x 6'3" | 135cm x 190cm |
| King Size | 5' x 6'6" | 150cm x 200cm |
| Super King | 6' x 6'6" | 180cm x 200cm |
| European Small Single | 2'8" x 6'6" | 80cm x 200cm |
| European Single | 3' x 6'6" | 90cm x 200cm |
| European Double | 4'7" x 6'6" | 140cm x 200cm |
| European King Size | 5'3" x 6'6" | 160cm x 200cm |
All mattress sizes given are approximate and stated sizes refer to the sleeping surface only. Mattresses sizes may vary slightly from their stated dimensions due to manufacturing tolerances, please allow +/- 2 inches (5cm).
You can spread the cost of purchases over £400 without any fees or interest thanks to our partnership with Klarna, a payment service provider.
Available payment options
18+, T&Cs apply, Credit subject to status. Bedsonline.biz Ltd is authorised and regulated by the Financial Conduct Authority (FCA FRN 710091) and acts as a credit intermediary and not a lender, offering credit products provided exclusively by Klarna Bank AB (publ). Finance is only available to permanent UK residents aged 18+, subject to status, terms and conditions apply. Klarna’s [Pay in 3 instalments] [and] [Pay in 30 days] are unregulated credit agreements.Borrowing more than you can afford or paying late may negatively impact your financial status and ability to obtain credit. 18+, UK residents only. Subject to status. Ts&Cs and late fees apply.
*Delivery charges may apply for some areas. Please see our delivery page for more information.
1. Order by 5pm for next day delivery between Monday-Friday, 12pm on Saturday and 3pm on Sunday. The 'Order by' time may be subject to change dependant on our delivery partners.
Bedsonline.biz Ltd is authorised and regulated by the Financial Conduct Authority (FCA FRN 710091) and acts as a credit intermediary and not a lender, offering credit products provided exclusively by Klarna Bank AB (publ). Finance is only available to permanent UK residents aged 18+, subject to status, terms and conditions apply.
MattressNextDay, 116 Joseph Wilson Industrial Estate, Whitstable, Kent, CT5 3SN
