Silentnight UltraGel 3000 Pocket Mattress
Mattress
Silentnight UltraGel 3000 Pocket Mattress
Size
Firmness
Construction
Depth (cm)
35
Layers
3
Layer Details
- UltraGel comfort layer. A gel-infused comfort layer that is breathable, which means it helps disperse heat rather than trapping it. It relieves pressure and responds to your movements as you change position.
- Boxtop. A sumptuous boxtop sits above the springs, adding a plush, cushioned feel to the sleep surface. It is the layer that gives the mattress its deep, upholstered look.
- Mirapocket and mini springs. 2000 Mirapocket springs and 1000 mini springs each sit in their own pocket and work independently, which means weight and pressure are spread evenly. They also adjust to movement, so you feel supported without the ripple effect of a traditional spring unit.
Layer details from silentnight.co.uk product page, September 2026.
- Room to spread out alone: The UK small double is 30cm wider than the UK single, which means a solo sleeper can turn, stretch and shift position without meeting the edge.
- Keeps small rooms usable: At 15cm narrower than the UK double, it can be the difference between a wardrobe door that opens fully and one that catches the bed frame.
- Easy step up from a single: The UK small double is the same length as the UK single, so a teenager moving up gains width without the bed pushing further into the room.
- Quiet for the odd shared night: Pocketed springs move independently, so guests sharing occasionally should feel a little less of each other turning over, although the space is snug for two.
- Cooler for one warm sleeper: The breathable gel layer helps disperse heat, which suits a solo sleeper in a small room where warmth tends to build up overnight.
This size suits you if...
You sleep alone and want more width than a single allows, your double bedroom is compact and every bit of floor matters, or you are furnishing a guest room where couples stay occasionally rather than every night.
Consider another size if...
You share the bed every night and both want room to move. We'd recommend the UK double instead, which gives 67.5cm each; we suggest at least 2.6m x 2.8m for the UK double.
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What size room do I need for a Silentnight UltraGel 3000 small double?
We suggest allowing at least 2.4m x 2.8m for a UK small double. That leaves space to walk around the bed and open doors. If your room is tighter, measure door swing and furniture clearance before ordering, because the mattress itself is 120 x 190cm and your frame will add a little to that.
Is the UltraGel 3000 in a UK small double big enough for a couple every night?
It works for occasional stays, such as guests over a weekend, but nightly sharing can feel cramped. If two of you sleep together every night, the UK double is 15cm wider and gives 67.5cm each. We suggest at least 2.6m x 2.8m for the UK double.
Is a small double UltraGel 3000 a good upgrade for a teenager outgrowing a single?
Yes, for most growing teenagers. The UK small double is 30cm wider than the UK single but the same length, so the bed takes up more width without reaching further across the room. Taller teenagers may still want to check that 190cm gives them enough length.
Will the Silentnight UltraGel 3000 small double fit a 4ft bed frame?
It should, as the UK small double is the standard 4ft size, measuring 4ft x 6ft 3in or 120 x 190cm. Frames of this width are widely available in the UK. The mattress is 35cm deep, so check that any frame with a raised side or footboard suits that height.
Should I choose a small double or double UltraGel 3000 for a guest room?
If guests are mostly single visitors or couples staying a night or two, the UK small double keeps a small guest room easier to move around in. Pick the UK double if couples stay for longer spells, and allow at least 2.6m x 2.8m for that size rather than 2.4m x 2.8m.