Sealy Shelby Posturetech Mattress - Firm


SKU# 111-00438-configurable

  • Only £45
  • Only £39.99
Only £ 229
In stock
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on all online orders*
Product Description
40 Night Comfort Guarantee

Our Sealy Shelby mattress offers you luxurious comfort with a firm level of support, all for a great price.

Featuring Sealy's patented Posturetech spring system, the Shelby mattress helps to distribute weight evenly, supporting you where you need it most and preventing 'roll together'.

Luxurious fillings provide a firmer sleeping surface while the traditional hand tufted finish with a soft damask cover ensures optimal comfort throughout the night.

- Traditionally tufted
- Damask cover
- Easy care non-turn mattress
- Comfort grade 2 - Firm

Product code: 111-00438

Comfort grade:
  • 1
  • 2
  • 3
  • 4
  • 5

Comfort grade 1 - Orthopaedic An orthopaedic mattress is designed to provide maximum comfort to your body while also working to gently support your back and joints.

Comfort grade 2 - Firm Great if you sleep mainly on your stomach or back, a firm mattress will give great support all night long.

Comfort grade 3 - Medium Firm This grade will suit you If you like to sleep mainly on your stomach or back, but prefer a softer mattress.

Comfort grade 4 - Medium Suitable for all kinds of sleepers and for those who sleep in different positions a medium mattress is a great all round choice.

Comfort grade 5 - Medium Soft Perfect if you tend to sleep mainly on your side or lots of different positions a medium soft rating gives fantastic comfort all night long.

3'0 Single: H24cm x W90cm x L190cm
4'6 Double: H24cm x W135cm x L190cm
5'0 King: H24cm x W150cm x L200cm
Delivery and Returns
Our Two-Man Delivery Service deliver to most postcodes in Mainland England, Scotland, Wales, the Isle of Wight and Northern Ireland. Deliveries will normally take place on the times stated on your order acknowledgement. Please note that deliveries to Northern Ireland may take longer.

Deliveries to the IV and AB postcodes are serviced by one of our delivery partners. You will receive a call to arrange delivery to your home within 7-14 days of your chosen date.

Bedding will normally be delivered within 5 working days by a courier.

Furniture will be delivered by a 3rd party supplier who will contact you directly to book your delivery date (normally within 6 weeks)


For full details see our Delivery Information page.


To amend to your order in any way, please call 0344 292 00 00


We want you to be happy with your purchase. If not, for online purchases you are entitled to a full refund if you request one in writing within 14 working days of receipt.


For refunds and exchanging items, it's important that returned items are in the best possible condition, so please take care of them and ensure they are in their original packaging.


To make sure that you chose to right mattress, we offer a '40 night comfort guarantee' (only applicable to Divans and Mattresses) that allows you to sleep on your mattress for up to  40 nights. If its not right for you, you may exchange it for an alternative, as long as you inform us within the 40 nights from the date of delivery.


Certain goods may be subject to a cancellation charge.

Sealy Shelby Posturetech Mattress - Firm is rated 4.3333 out of 5 by 9.
Rated 5 out of 5 by from Really pleased with the bed, mattress and bedding The delivery drivers were excellent, they phoned me twice in the morning advising on delivery time and were spot on. They were polite and courteous and explained everything in detail. They are excellent ambassadors for your company and I would score them 10/10
Date published: 2014-09-02
Rated 4 out of 5 by from Sealy - Sealy Shelby Posturetech Mattress - Firm Hard to start, but after a couple of nights sleep on the mattress it has settled and softened and is very comfy. I have a bad back and find it hard to find a good mattress that I can sleep on, but not had as many good nights' sleep since I bought it.
Date published: 2014-08-10
Rated 5 out of 5 by from comfortable very comfortable great night sleep great for back trouble would reccomend it 5 star
Date published: 2014-07-22
Rated 5 out of 5 by from Quality Mattress It's a firm mattress, but not overly firm. As a side sleeper I find this mattress to be comfortable both on my side and on my back. Since my mattress was delivered I have slept very well.
Date published: 2014-07-16
Rated 5 out of 5 by from Great for bad back sufferers! Bought a month ago and I no longer wake up stiff from back ache! Only fault is no protection over the little metal tabs that keep it all together and NOT happy dreams didn't send my free mattress protector
Date published: 2014-07-04
Rated 5 out of 5 by from Best Sleeps Ever! My mattress arrived last Wednesday and ever since I've had the best and comfiest sleep I have had in ages! As I suffer from a frequent bad back and back pain, I decided to go for a much firmer mattress... and I'm so pleased I chose this one. Fantastic!!
Date published: 2014-06-26
Rated 1 out of 5 by from shelby i bought this 2wks ago as my back has been killing me after buying a memory foam a yr ago so was desperate for a good night sleep , biggest mistake cos this mattress is solid ,feels like ur lying on concrete , worse than the 1 i had , now evry bone in my body aches , after about 5 hrs i need to get up
Date published: 2014-05-28
Rated 5 out of 5 by from AMAZIIIIING, LUSCIOUS, BEST SLEEP EVER EVERY NIGHT Good quality. Exactly what it says on the tin. MUST GET!! You will not be dissapointed.
Date published: 2014-05-16