Sealy Decadence Mattress
The Sealy Decadence is a firm mattress, which means it holds you on top of the surface rather than letting you sink in.
£1,342.15
Get the lowest price we've found
The Sealy Decadence is a sensible shout if you sleep on your back or front, or you simply prefer a solid, supportive feel. It sits at the pricier end, and it comes in UK Single, Double, King and Super King sizes. Detailed construction information is thin on the ground from the listing we've reviewed, so if you like to know exactly what's inside before you buy, it's sensible to ask the retailer for a full specification first.
Mattress specifications
Firmness
Firm
Type
Open Coil Spring
Depth (cm)
Number of Layers
Trial Period (nights)
60
Warranty (years)
Price Range
£1,342 to £2,325
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Certifications
Assessed from the specification published by Mattress Man, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
Choose the Decadence if a firm feel is what you're after. Firmer mattresses tend to suit back and front sleepers, and heavier bodies that need more pushback to keep the spine level. The mattress uses Sealy's AlignSupport spring system, though the listing doesn't explain the construction layer by layer, which is frustrating at a premium starting price. If you buy through Mattressman, they list free next day delivery, with a handling time of 0 to 1 days and transit of 1 to 3 days, plus a 60-night trial. Those are Mattressman's own terms, so check them before you order elsewhere, as other shops may offer something different.
Key features & layer details
We’re still collecting information on this mattress. Unfortunately, we don’t have its key features yet.
Best suited for?
Back sleepers
The firm feel and AlignSupport spring system give a solid, supportive surface, which suits anyone who lies on their back and wants to stay level.
Front sleepers
A firm surface keeps the middle of the body from sinking too far, which is what most people who sleep face down are looking for.
Heavier sleepers
Firm construction with an AlignSupport spring system gives more pushback, which helps heavier bodies stay level instead of sinking into the mattress.
Lightweight side sleepers are the obvious mismatch: a firm surface can press into the shoulder and hip rather than letting them settle in, which often means a sore morning. It's also a stretch if you're on a tighter budget, given the starting price. If you like a plush, sink-in feel, look elsewhere.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Sealy Decadence Mattress
Select a comparison article below or choose to compare this mattress side by side with up to 2 other mattresses.
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
Is the Sealy Decadence mattress firm or soft?
It's listed as firm. In practice that means you'll lie on top of the mattress rather than sinking into it, with a supportive, stable feel. Firm mattresses generally suit back and front sleepers best, while lightweight side sleepers may find the surface a little unyielding around the shoulder and hip.
What sizes does the Sealy Decadence come in?
It's available in UK Single, UK Double, UK King and UK Super King.
Does the Sealy Decadence come with a trial period?
Mattressman lists a 60-night trial on this mattress. That's the retailer's own offer rather than a Sealy guarantee, so if you buy from a different shop the terms may differ. Always check the trial and returns policy with your chosen retailer before ordering.
How quickly can the Sealy Decadence be delivered?
Mattressman lists free next day delivery, with a handling time of 0 to 1 days and transit of 1 to 3 days. These are Mattressman's delivery terms, so timings and costs may be different if you buy from another retailer.
Couldn't find an answer to your question? Send us a message