Silentnight Memory 800 Pocket Mattress
Mattress
Silentnight Memory 800 Pocket Mattress
Size
Firmness
Construction
Depth (cm)
24
Layers
2
Layer Details
- Memory foam. The top layer gently moulds to the contours of your body, which means pressure points like hips and shoulders feel cushioned rather than pressed against the springs. It provides that slow, hugging comfort memory foam is known for.
- Mirapocket springs. Beneath the foam, 800 Mirapocket springs respond independently to your movements, giving zoned support and improved spinal alignment. Because each spring works on its own, motion transfer across the bed is reduced.
Layer details from silentnight.co.uk product page, September 2026.
- A shared bed that fits the room: At 135cm wide, the UK double leaves space for wardrobes and drawers in an ordinary British bedroom, where a UK king can start to crowd things.
- Pocket springs matter more when you share: The 800 Mirapocket springs move independently, which means a partner turning over on their side of a double is far less likely to wake you.
- 67.5cm each for two sharing: That is the width each person gets in a UK double, comfortable for most couples, if a little cosy for restless sleepers.
- Bedding is easy and cheap to find: Double sheets and duvets are stocked everywhere at every price point, useful if you're furnishing a whole home and the budget is stretched thin.
- Sensible for a guest room too: A double in the spare room sleeps visiting couples properly, and the medium feel is a safe middle ground for guests you can't ask in advance.
This size suits you if...
You share the bed every night and your room is a typical UK size, around 2.6m x 2.8m or larger, or you're kitting out a first flat or new home and want a proven couples' size without stretching the budget. It also suits a solo sleeper who likes to spread out, even one sharing the odd corner with a dog or cat.
Consider another size if...
You and your partner both want more personal space and your room can take a bigger bed. The UK king is 15cm wider and 10cm longer; allow at least 2.7m x 2.9m for it.
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Is the Silentnight Memory 800 double big enough for two adults?
For most couples, yes. A UK double gives 67.5cm each for two people sharing, and the 800 pocket springs respond independently, so movement on one side transfers less to the other. If either of you is broad shouldered or sleeps restlessly, sizing up to the UK king, which is 15cm wider, buys noticeable extra space.
Will a double fit in my bedroom with bedside tables both sides?
Usually, in an average UK room. We suggest at least 2.6m x 2.8m for a UK double, and at that size you can typically keep a table on each side plus walking room at the foot. Measure your wall-to-wall width and remember to allow for wardrobe doors opening.
Should I get the Memory 800 in a double or a small double?
A UK small double works for solo sleepers in tight rooms, but for couples the UK double is the better call: it is 15cm wider, and with memory foam's hugging feel you'll appreciate the room to reposition. Both are the same length, so the difference is purely elbow room.
Is the double a good choice for a guest room?
It is a sensible one. A UK double sleeps visiting couples properly rather than making do, the medium firmness suits a range of guests, and its 135 x 190cm footprint usually leaves space for the wardrobe and drawers a spare room tends to double up on.
Will a double mattress get up the stairs in an older house?
A 135cm-wide mattress is generally manageable on the turning stairs of older terraces and tight new build landings, where a UK king or UK super king can be a real struggle. This is a hybrid with pocket springs, so it flexes a little but shouldn't be folded hard. Measure your tightest turn first.