Silentnight Breathe Gel Memory Foam Mattress
The Silentnight Breathe Gel Memory Foam Mattress is a medium firm, all-foam mattress at 18cm deep, which makes it a little shallower than the deep hybrid styles you may have seen elsewhere, but simpler to move and fine on most bed bases.
- Cool gel foam for warm sleepers
- Eases pressure at hips & shoulders
- Edge-to-edge support, no roll-together
£249
Get the lowest price we've found
The Silentnight Breathe Gel pairs cool gel memory foam, which regulates body temperature better than standard memory foam, with Silentnight's Miratex foam beneath for edge to edge support. Available in UK Single, Double and King sizes, it sits at the affordable end of the market. It comes from an NBF-approved manufacturer and is made in the UK.
Mattress specifications
Firmness
Medium Firm
Type
Gel Memory Foam
Depth (cm)
18
Number of Layers
3
Trial Period (nights)
Warranty (years)
5
Price Range
£249 to £349
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Combination Sleeping
Certifications
BS 7177
Assessed from the specification published by MattressNextDay, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
If you like the contouring feel of memory foam but worry about overheating, the cool gel layer here is the main draw: it enhances pressure relief while handling body heat better than standard memory foam. Beneath it, Miratex foam conforms to your shape and gives edge to edge support, which means you can use the full width of the mattress without that roll-together dip in the middle. The medium firm feel suits most back and combination sleepers, although lightweight side sleepers may find it slightly too firm. It's hypoallergenic, carries a 5-year Silentnight manufacturer's guarantee, and it's good value for an all-foam design.
Key features & layer details
Soft Touch Quilted Cover
A quilted fabric finish that gives a smooth, breathable sleep surface. It's the first thing you'll feel, and it's designed for comfort rather than a taut, flat top.
Cool Gel Memory Foam
This layer enhances pressure relief and support, which means less strain on hips and shoulders as you settle in. It also regulates body temperature better than standard memory foam, a genuine help if you tend to sleep warm.
Supportive Miratex® Foam
Miratex foam conforms to the shape of your body as you sleep, giving maximum comfort. It provides edge to edge support with no roll together, so you get the full sleeping surface rather than drifting towards the middle.
Layer details from mattressnextday.co.uk product page, September 2026.
Best suited for?
Back sleepers
The medium firm feel and supportive Miratex foam layer keep the body held evenly, which suits most people who spend the night lying on their back.
Combination sleepers
Edge to edge support with no roll together means you can change position through the night and still have the full width of the surface to use.
Warm sleepers
The cool gel memory foam regulates body temperature better than standard memory foam, so you get the contouring feel without as much trapped heat.
Couples
Because Miratex foam gives edge to edge support with no roll together, two people can use the whole width without drifting towards the middle.
Allergy sufferers
The mattress is hypoallergenic, which makes it a sensible choice if you want a sleep surface that is less likely to aggravate allergies.
If you prefer the springy, responsive feel of pocket springs, an all-foam mattress like this will feel noticeably different, with more of a slow sink. At 18cm it's slimmer than many mattresses, which taller or heavier sleepers may notice. Lightweight side sleepers could find medium firm a touch too solid. No Super King size is listed.
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.
Silentnight Breathe Gel Memory Foam 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 Silentnight Breathe Gel mattress good for hot sleepers?
It should help. The cool gel memory foam layer is designed to regulate body temperature better than standard memory foam, and the quilted cover is breathable. All-foam mattresses generally hold more warmth than sprung designs, so very hot sleepers should weigh that up.
How firm is the Silentnight Breathe Gel Memory Foam Mattress?
It's rated medium firm. That suits most back and front sleepers, and heavier side sleepers too, although lightweight side sleepers may find it a little too firm for full pressure relief at the shoulder.
Does the Silentnight Breathe Gel mattress come with a guarantee?
Yes, the MattressNextDay listing states a 5-year Silentnight manufacturer's guarantee. No trial period is mentioned on that page, so check returns terms with whichever retailer you buy from before ordering.
What sizes does the Silentnight Breathe Gel mattress come in?
It's available in UK Single, Double and King. There's no Super King option listed, which is a limitation if you need the largest size.
How is the Silentnight Breathe Gel mattress delivered?
MattressNextDay offers free next day delivery to mainland UK, though some addresses may incur a small fee, and old mattress removal for an extra charge. These are that retailer's services, so delivery terms will differ if you buy elsewhere.
Couldn't find an answer to your question? Send us a message