Silentnight Pocket Essentials 800 Memory Mattress
Mattress
Silentnight Pocket Essentials 800 Memory Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
24
Layers
2
Layer Details
- Memory foam. This top layer gently moulds to the contours of your body, which means pressure points at your hips and shoulders get some relief. It provides that cushioned, hugging comfort memory foam is known for.
- Mirapocket springs. Beneath the foam, 800 Mirapocket springs respond independently to your body's movements. This gives zoned support and improved spinal alignment, so your back stays in a healthier position through the night.
Layer details from silentnight.co.uk product page, September 2026.
- Fits the smallest rooms: At 3ft x 6ft 3in, this mattress leaves room for a desk, wardrobe and toy storage in a child's bedroom rather than swallowing the floor.
- A sensible first grown-up mattress: The medium firm feel suits growing children and teens, giving support without the hard, unyielding surface of many budget kids' mattresses.
- Works on raised frames: At 24cm deep, it sits within the depth most bunk and mid-sleeper frames allow, though check your frame's maximum mattress depth against the safety rail before buying.
- Guest-ready without fuss: For a spare room that doubles as an office, the UK single keeps the desk usable while still offering visitors 800 pocket springs rather than a tired old divan.
- Cheap, easy bedding: Standard single sheets and a 135 x 200cm single duvet fit, and both are the most widely stocked and affordable bedding of any UK size.
This size suits you if...
You're buying for a child or teenager moving up to a proper sprung mattress, you sleep alone in a compact room or student flat where every centimetre of floor matters, or you're kitting out a spare room and want guests to get pocket-sprung support rather than an afterthought.
Consider another size if...
You're an adult who spreads out in your sleep, or you share the bed even occasionally, and your room can take more width. We'd recommend the UK double instead, which is 45cm wider and the same length; allow at least 2.6m x 2.8m for it.
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Is the Silentnight Pocket Essentials 800 UK single ok for a bunk or mid sleeper?
Usually, yes. At 90 x 190cm it matches standard UK bunk and mid-sleeper frames, and its 24cm depth suits most of them. Do check your frame's stated maximum mattress depth first, because the safety rail on a top bunk needs to sit well above the mattress surface to do its job.
Is the Silentnight Pocket Essentials 800 single suitable for a child?
Yes, for most children moving on from a cot or toddler bed. The medium firm feel gives the support growing bodies need, while the memory foam layer adds some cushioning at the shoulders and hips. Lighter children won't sink far into the foam, so it will feel a touch firmer to them than to an adult.
How much space does a UK single mattress need in a bedroom?
We suggest allowing at least 2.1m x 2.8m of floor space. That leaves room to walk around the bed and open drawers or wardrobe doors. In a loft conversion, the narrow 90cm width also helps you tuck the bed under the slope while keeping standing height where you actually need it.
Can an adult sleep comfortably on this mattress in a single?
A solo adult can, provided you don't sprawl. At 90cm wide it's the standard UK one-person size, and the 800 pocket springs support an adult's weight well at the medium firm tension. If you tend to spread out, the UK small double is 30cm wider and the same length; we suggest at least 2.4m x 2.8m of room for it.
Is the single a good choice for a spare room?
It's a practical one. A UK single leaves space for a desk or storage in a room that isn't only for guests, and two singles can fit where one double would dominate. The pocket springs and memory foam mean visitors get a proper mattress, and the prices shown on this page update as retailers change them.