Silentnight 3 Zone Memory Foam Mattress
Mattress
Silentnight 3 Zone Memory Foam Mattress
Size
Firmness
Construction
Depth (cm)
18
Layers
2
Layer Details
- Soft Knitted Sleep Surface. A soft, breathable knitted cover that adds a touch of comfort at the surface. It takes a little of the edge off the firm feel beneath.
- Memory Foam. Body-moulding memory foam that responds to your shape, which means pressure points at the hips and shoulders get some relief. Expect a contouring, cradled feel rather than bounce.
Layer details from mattressnextday.co.uk product page, September 2026.
- A shared size that fits the room: At 135 x 190cm, the UK double leaves space for furniture in bedrooms where a UK king would crowd the walkways.
- 67.5cm each for two sharing: Two people get 67.5cm of width apiece, which works well here because firm memory foam keeps you settled on your own side rather than rolling together.
- Foam suits close-quarters sharing: Memory foam absorbs movement, so at double width, where you feel a partner's turning more than on a wider bed, night-time disturbance stays low.
- Budget-friendly for a whole-house furnish: A firm, UK-made foam double at a modest price suits anyone kitting out a first flat or a guest room without stretching the budget.
- Easy to dress and to move: Standard double bedding is stocked everywhere, and a foam mattress at this size flexes around tight landings and turning staircases more forgivingly than a sprung one.
This size suits you if...
You share the bed every night and want the classic couples' size that still fits a typical UK bedroom, you're furnishing a guest room where visiting couples will stay, or you're buying on a budget for a first flat and need a firm, dependable double that leaves room for a wardrobe and a chest of drawers.
Consider another size if...
You and your partner both like room to spread out, or one of you is a restless sleeper who drifts across the bed. We'd recommend the UK king instead: it's 15cm wider and 10cm longer, and we suggest a room of at least 2.7m x 2.9m for it.
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Is the Silentnight 3 Zone Memory Foam double big enough for a couple?
For most couples, yes. Two people sharing the UK double get 67.5cm of width each, and the memory foam absorbs movement well, so you'll feel less of a partner turning over than you would on a sprung mattress this size. Broader couples, or anyone who sleeps starfished, may find the UK king more comfortable.
Will the UK double fit my bedroom with bedside tables on both sides?
In most rooms, yes. The mattress is 135cm wide, and we suggest a room of at least 2.6m x 2.8m for a UK double, which usually leaves enough wall on each side for a slim table and a walkway. Measure your room first if it's on the smaller side, as radiators and door swings eat into that margin.
Should I buy the Silentnight 3 Zone in a UK double or a UK king?
Choose the UK double if your room is modest or you want the cheaper option while furnishing several rooms at once. The UK king is 15cm wider and 10cm longer, so it suits taller sleepers and couples who want more personal space, but we suggest at least 2.7m x 2.9m of room for it.
What are the dimensions of the Silentnight 3 Zone Memory Foam in a double?
The UK double measures 135 x 190cm, or 4ft 6in x 6ft 3in. It takes standard double fitted sheets and a 200 x 200cm double duvet, both of which are the easiest bedding sizes to find in UK shops. At 18cm deep it sits lower on the frame than many mattresses, so shallower fitted sheets will still tuck in neatly.
Is the double a good size for a guest room?
It's a sensible choice. A UK double lets visiting couples share comfortably while leaving space in a spare room for the wardrobe and drawers that guest rooms tend to double up on. The firm feel suits occasional use too, since it holds its shape well, though lightweight side sleepers among your guests may find it a little unyielding.