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)
Certifications
Assessed from the specification published by MattressNextDay, captured September 2026, and from regular price comparison across our UK retail partners.
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 at £249 to £349 it's honest value for an all-foam design.
Key Features & what's inside
- 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.
Who's it NOT for?
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.
Silentnight Breathe Gel Memory Foam Mattress
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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, priced from £249 with the range running £249 to £349. 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 £39. These are that retailer's services, so delivery terms will differ if you buy elsewhere.
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