Silentnight Memory 1000 Mirapocket Mattress
Mattress
Silentnight Memory 1000 Mirapocket Mattress
Size
Firmness
Firm
Construction
Depth (cm)
25
Layers
2
Layer Details
- Memory Foam Comfort Layer. A responsive memory foam layer that gently moulds to your body's contours, which means pressure points like hips and shoulders get some welcome relief. It absorbs energy as you move, so you feel cradled rather than bounced.
- Mirapocket Spring Support System. 1,000 individually nested pocket springs (counted on the king size, pro-rata for other sizes) that react independently to your body weight and movement. In practice this means zoned support that keeps your spine aligned and limits motion transfer across the bed.
Layer details from silentnight.co.uk product page, September 2026.
- Room to share without dominating the room: At 135 x 190cm, the UK double fits comfortably in bedrooms where a UK king would leave little space to walk round.
- 67.5cm each for two sharing: You get 67.5cm each for two people sharing, which is enough for most couples who sleep fairly close.
- Springs that keep the peace: The pocket springs react independently to movement, which matters more in a double than a larger size because you sleep closer together.
- Bedding is easy and cheap: Double sheets and a 200 x 200cm double duvet are stocked everywhere, useful if you're kitting out a whole home on a stretched budget.
- An affordable size of an affordable hybrid: The double is a sensible pick if money is tight; compare the retailers listed on this page, as prices update when retailers change them.
This size suits you if...
You share the bed every night and your bedroom is a typical UK size, or you sleep alone and want space to stretch out, perhaps with a dog or cat claiming a corner. It also makes sense for a guest room that hosts visiting couples, since it sleeps two without swallowing the floor space a spare room rarely has.
Consider another size if...
You and your partner both like space, or one of you is a restless sleeper, and your room measures at least 2.7m x 2.9m. In that case we'd recommend the UK king instead, which is 15cm wider and 10cm longer.
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Is the Silentnight Memory 1000 double big enough for a couple?
For most couples, yes. Two people sharing get 67.5cm each, and the 1,000 pocket springs (counted on the king size, pro-rata for other sizes) react independently to movement, so you feel less of your partner's fidgeting. Taller or broader couples, or restless sleepers, tend to be happier sizing up to the UK king.
What room size do I need for the Silentnight Memory 1000 in a UK double?
We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That allows bedside tables on both sides and space to open a wardrobe, which is usually the real squeeze in a second bedroom or first flat rather than the mattress itself.
How big is the Silentnight Memory 1000 double in feet?
It measures 4ft 6in x 6ft 3in, or 135 x 190cm. That's the standard UK double footprint, so it fits any UK double bed frame and takes standard double sheets and a 200 x 200cm double duvet, all widely stocked at every price.
Should I get this mattress in a double or a king?
It comes down to your room. The UK double is 15cm narrower and 10cm shorter than the UK king, so it suits rooms where a king would crowd everything else out. If your bedroom is at least 2.7m x 2.9m and you both value space, the UK king is the more comfortable long-term choice.
Will a double mattress get up the stairs in an older house?
Usually, yes. The double is the largest common size that still turns most tight staircases and narrow terraced landings without drama, one reason it remains Britain's default couples' size. If your stairs are especially awkward, measure the tightest turn first; the mattress is 135cm wide and 25cm deep.