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.
- Fits the smallest bedrooms: At 90cm wide, this single leaves floor space free in a child's room where the bed competes with a wardrobe, desk and toy storage.
- Works on raised frames: The single is the size bunk beds, cabin beds and mid sleepers are built for, so this mattress slots straight onto those frames.
- Supportive for growing sleepers: The 800 Mirapocket springs give zoned support and spinal alignment, which matters through a child or teenager's growing years.
- Pressure relief for solo adults: The memory foam layer cushions shoulders and hips, so a single adult gets the same comfort as the larger sizes in a compact footprint.
- Cheap, easy bedding: Standard single sheets and a 135 x 200cm duvet fit, and they're the most widely stocked and least expensive bedding of any UK size.
This size suits you if...
You're buying for a child or teenager and want proper spring support rather than a basic foam slab, you sleep alone and are happy with the smallest standard adult size, or you're setting up a spare room or study that doubles as guest space and need a bed that doesn't dominate the floor.
Consider another size if...
You're an adult who likes to spread out, or two of you will share the bed. We'd recommend the UK double instead: it's 45cm wider, the same length, and we suggest a room of at least 2.6m x 2.8m.
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What size is the Silentnight Memory 800 in a UK single?
The UK single measures 90 x 190cm, which is 3ft x 6ft 3in. We suggest a room of at least 2.1m x 2.8m so you have space to walk around and open drawers, though it will physically fit in smaller spaces if it must.
Can I use the Silentnight Memory 800 single on a bunk or mid sleeper?
The single is the size these frames are designed around, so the footprint fits. This mattress is 24cm deep, which is on the taller side for a top bunk, so check the frame's maximum mattress depth and make sure the guardrail still sits well above the mattress surface.
Is the Silentnight Memory 800 single suitable for a child?
Yes, with a caveat on age. The medium feel and zoned pocket springs suit growing children and teenagers well, and memory foam eases pressure at the shoulders and hips. Silentnight's guidance on minimum age applies as with any memory foam mattress, so check before buying for a very young child.
Is a UK single big enough for an adult?
For one adult, yes: at 90 x 190cm it's the standard one-person size, and the medium firmness suits most back and side sleepers. Taller or broader adults may feel hemmed in, though. The UK small double is 30cm wider and the same length, and needs a room of at least 2.4m x 2.8m.
Where is the Silentnight Memory 800 single cheapest?
It varies week to week, so compare the retailers listed on this page. The prices shown here are updated as retailers change them, which makes it easy to spot the current lowest price for the UK single without checking each site yourself.