Silentnight Breathe Gel Memory Foam Double 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
£299
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Silentnight Breathe Gel Memory Foam Mattress
More available sizes
Mattress details
Mattress
Silentnight Breathe Gel Memory Foam Mattress
Size
Firmness
Medium Firm
Construction
Foam
Rolled
Memory Foam
Gel
Depth (cm)
18
Layers
3
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.
Key benefits
- A fair split for two: At 67.5cm each for two people sharing, both of you get proper space on the cool gel layer, which means less overheating when you sleep close together.
- No drift to the middle: The Miratex foam gives edge to edge support with no roll together, so the full 135cm width stays usable rather than shrinking in practice.
- Fits real UK bedrooms: A UK double fits comfortably where a UK king would dominate, usually leaving room for bedside tables on both sides in a typical room.
- Manageable to move in: An 18cm all-foam double is lighter and more forgiving than a deep hybrid, a real help on the turning staircase of an older terrace.
- Cheap and easy to dress: Double sheets and a 200 x 200cm double duvet are sold everywhere at every price, useful if you're furnishing a whole home on a tight budget.
This size suits you if...
You share the bed every night and want the classic couples' size, or you sleep alone, perhaps with a dog or cat claiming a corner, and want space to spread out. It also suits a guest room that hosts visiting couples, or a first flat where the bed has to fit alongside a wardrobe and drawers and the budget is stretched across every room at once.
Consider another size if...
You and your partner both like room to sprawl, or one of you is tall, since a UK double is 190cm long. We'd recommend the UK king instead: it's 15cm wider and 10cm longer, and we suggest at least 2.7m x 2.9m for it.
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FAQ's
Is the Silentnight Breathe Gel double big enough for a couple?
For most couples, yes. The UK double gives 67.5cm each for two people sharing, and the Miratex foam's edge to edge support means you can use that full width without rolling together. Broad-shouldered partners, or anyone used to sleeping alone in a bigger bed, may prefer the UK king, which is 15cm wider and 10cm longer.
What room size do I need for the Silentnight Breathe Gel in a UK double?
We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That leaves enough clearance for bedside tables on both sides plus a wardrobe, which is why the UK double remains the default in typical British bedrooms and first flats where floor space is tight.
Is the double version of the Silentnight Breathe Gel easy to get upstairs?
Easier than most. At 18cm deep and all foam, the UK double is more forgiving on tight new build landings and the awkward turning stairs of older terraces than a deep, rigid hybrid would be. Check the brand's own guidance on how it arrives before booking a delivery slot.
Would a UK single or a UK double suit a solo sleeper better?
If the room allows, the UK double is the nicer solo option: it's 45cm wider than the UK single at the same length, so there's room to stretch out, or to share with a dog or cat that claims a corner. In a small second bedroom that also needs a wardrobe and drawers, the UK single frees up useful floor space.
What bedding does the Silentnight Breathe Gel double take?
Standard UK double bedding: sheets sized for 135 x 190cm, or 4ft 6in x 6ft 3in, and a 200 x 200cm double duvet. Because it's the most common British size, you'll find bedding at every price point, handy if this mattress is going in a guest room you're kitting out from scratch.