Silentnight Pocket Essentials 1000 Memory Mattress
Mattress
Silentnight Pocket Essentials 1000 Memory Mattress
Size
Firmness
Construction
Depth (cm)
25
Layers
2
Layer Details
- Memory Foam Comfort Layer. A responsive memory foam that gently moulds to your body's contours, which means it absorbs energy and eases built-up pressure at the hips and shoulders. You'll feel a slight cradling on the surface rather than a deep sink.
- Mirapocket Spring Support System. 1000 individually nested pocket springs (based on the king size, with the count varying pro-rata for other sizes) react independently to your body weight and movement. Silentnight states the zoned support is scientifically proven to help spinal alignment and posture.
Layer details from silentnight.co.uk product page, September 2026.
- Room to spread out alone: At 30cm wider than a UK single, this size lets a solo sleeper change position freely without the memory foam surface ending at their elbow.
- Fits compact double bedrooms: Being 15cm narrower than a UK double, it can be the difference between a door that clears the bed frame and one that doesn't.
- Springs where you actually lie: The Mirapocket springs react independently to weight, so a solo sleeper who drifts across the full 120cm width gets consistent support edge to edge.
- Copes with occasional sharing: The Medium/Firm feel and pocket springs make it a sensible guest room choice for couples staying the odd night rather than sleeping there permanently.
- Easy bedding to source: 4ft is a standard UK size, so small double fitted sheets fit the 25cm depth without fuss, and a standard double duvet drapes comfortably over it.
This size suits you if...
You sleep alone and have outgrown a UK single, perhaps as a teenager or an adult who likes to sprawl, but your room can't spare the width a UK double demands. Or you're furnishing a guest room, loft conversion or rental second bedroom where couples stay occasionally rather than nightly, and floor space around the bed matters as much as space on it.
Consider another size if...
You share the bed every night, in which case 120cm will feel tight for two adults long term. If your room allows at least 2.6m x 2.8m, we'd recommend the UK double instead, which is 15cm wider and the same length.
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Is a small double big enough for one adult on this mattress?
Comfortably, yes. The UK small double is 30cm wider than a UK single, so a solo adult can spread out, and because the Mirapocket springs respond independently across the full width, support stays consistent wherever you end up. Restless sleepers in particular get more from this size than from a single.
Can a couple share the Silentnight Pocket Essentials 1000 in a small double?
For occasional nights, it works: the pocket springs limit how much you feel a partner move, and the Medium/Firm feel holds two people without sagging into the middle. For every night, though, 120cm is a squeeze for two adults, and a UK double or UK king suits shared sleep far better.
What room size do you need for a small double mattress?
We suggest allowing at least 2.4m x 2.8m for a UK small double, which leaves enough room to walk around the bed and open drawers. That's our guidance rather than Silentnight's. If your room is meaningfully bigger than this, it may be worth checking whether a UK double fits instead.
How much smaller is the small double than the double in this mattress?
The UK small double is 15cm narrower than the UK double, and the two are the same length at 190cm. That 15cm sounds small on paper, but in a box room or loft conversion it often decides whether you can stand beside the bed. The mattress itself is identical in construction across both sizes.
Does this small double fit standard UK bed frames and sheets?
Yes. At 120 x 190cm, it matches the standard UK small double, so any 4ft frame will take it, and small double fitted sheets are widely stocked. Its 25cm depth sits within what standard fitted sheets are cut for. Most people pair it with a standard double duvet for a generous overhang.