Silentnight UltraGel 2000 Pocket Box Top Mattress
Mattress
Silentnight UltraGel 2000 Pocket Box Top Mattress
Size
Firmness
Medium
Construction
Depth (cm)
33
Layers
3
Layer Details
- UltraGel comfort layer. A gel infused layer that responds as you move, with cooling foam designed to chill and relax your body. In practice, this means less of the heat build-up you can get with standard foam.
- Boxtop. A sumptuous boxtop with advanced gel foam that spreads pressure and bodyweight evenly, which means fewer pressure points at your hips and shoulders. It adapts as you change position through the night.
- Mirapocket springs. 2000 Mirapocket springs, each in its own fabric pocket, so each one responds to your body independently. The zoned support is scientifically proven, according to Silentnight, to improve spinal alignment and posture.
Layer details from silentnight.co.uk product page, September 2026.
- Real stretching room for one: At 120cm wide, the UK small double gives a solo sleeper 30cm more width than a UK single, which means you can sprawl without meeting an edge.
- A softer feel suits a solo sleeper: With nobody else's weight on the 2000 Mirapocket springs, the medium soft surface responds to your body alone, so the sink-in comfort stays consistent all night.
- Fits rooms a double would crowd: It's 15cm narrower than a UK double, which is often the difference between a door that clears and one that doesn't in a box room or loft conversion.
- Cooling where you actually lie: One person on a 4ft surface tends to stay in the same zone, so the gel infused layer works exactly where your body heat builds up.
- Sensible for guest rooms: A visiting couple can share it for a night or two, and the plush boxtop makes the odd shared stay comfortable rather than a squeeze to endure.
This size suits you if...
You sleep alone and have outgrown a UK single but can't spare the floor space a UK double demands, your bedroom, loft room or studio measures at least our suggested 2.4m x 2.8m, or you're furnishing a guest room where couples stay occasionally rather than every night.
Consider another size if...
You share the bed with a partner most nights, because 120cm gets tight for two on a regular basis. We'd recommend the UK double instead, and we suggest allowing at least 2.6m x 2.8m for it.
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Is the UltraGel 2000 small double a good choice for one adult?
Yes, and arguably it's the size where this mattress makes most sense for a solo sleeper. You get 120cm of width to yourself, the medium soft boxtop cushions hips and shoulders without a partner's movement disturbing the springs, and the gel layer draws heat away from the one spot you occupy. Side sleepers in particular tend to get on well with it.
Can two people share the UltraGel 2000 in a small double?
For occasional nights, yes. The 2000 pocket springs respond independently, so two guests won't roll into each other on a short stay. For every night, 120cm is a squeeze for most couples, especially on a softer mattress where you both settle into the surface. If you'll share regularly, the UK double, 15cm wider, is the better buy.
What room size do I need for a small double UltraGel 2000?
We suggest a room of at least 2.4m x 2.8m. That leaves space to walk round the bed and open drawers or a wardrobe without shuffling sideways. If your room is tighter than that, measure carefully before ordering, and check the door and any sloping ceilings too, since this is a tall 33cm mattress on top of whatever base you choose.
Is the small double much smaller 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. For one sleeper that 15cm rarely matters; for a couple it does. In a compact bedroom the narrower width can be the difference between fitting bedside tables on both sides and having none at all.
What bedding fits the UltraGel 2000 in a small double?
You'll need small double, 4ft, fitted sheets, and because this mattress is 33cm deep, look for extra deep versions or the corners will ping off. A standard double duvet works fine on a 4ft bed and gives a generous overhang. Small double bedding is a stocked UK size, so you won't struggle to find it.