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.
- 90cm each for two: Sharing a UK super king gives each of you 90cm, which means a partner who sprawls or turns often has far more space to do it without reaching you.
- 15cm more each than a UK king: The UK super king is 30cm wider than the UK king at the same length, giving each sleeper 15cm more, a gap you notice most on restless nights.
- Independent springs plus real distance: The 2000 Mirapocket springs move independently, so a partner's turning stays local, and on a UK super king you also have genuine space between you.
- Room for a night-time visitor: When a child climbs in during the night, the full 180cm width means nobody gets pushed to the edge, and the same goes for a dog on the bed.
- Breathable gel for a busier bed: More bodies means more warmth, so the breathable gel layer, which helps disperse heat, is a useful feature on a UK super king that often sleeps three.
This size suits you if...
You share with a restless partner or regularly have children or a large dog in the bed, and your bedroom comfortably clears our suggested minimum of 3m x 2.9m.
Consider another size if...
Your bedroom falls short of 3m x 2.9m, or a sloping loft ceiling leaves no full-height wall for a 180cm-wide bed. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m.
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Silentnight UltraGel 3000 UK king or UK super king: which should I get?
If there are only ever two of you and neither is especially restless, the UK king may be enough. The UK super king is 30cm wider at the same length, giving 15cm more each. Choose it if children or pets join you, or a partner's movement wakes you. We suggest at least 3m x 2.9m, against 2.7m x 2.9m for the UK king.
Is a UK super king UltraGel 3000 big enough for two adults and a child?
For a small child, yes. Two adults get 90cm each, and the full 180cm width is the most room this mattress offers, so a child can fit between you without anyone ending up on the edge. If a child sleeps in with you most nights, the UK super king is the size in this range where that stays comfortable.
Will I feel my partner move on the Silentnight UltraGel 3000 super king?
Less than on a smaller size. The pocket springs work independently, so movement stays close to where it happens, and with 90cm each there is simply more mattress between you. On a UK super king, distance does a lot of what a comfort layer cannot, which is why very restless couples tend to size up.
Can a UK super king UltraGel 3000 go in a loft conversion bedroom?
Only if the floor space allows it. We suggest at least 3m x 2.9m, and in a loft conversion the sloping ceiling usually decides which wall the headboard goes against. At 35cm deep, this mattress sits tall, so check the headroom where you will be sitting up in bed, and measure the stair turns before ordering.
Is the UltraGel 3000 in a UK super king good for sleeping with a large dog?
It is the most practical size of this mattress for it. A large dog tends to claim a strip across the middle, and 180cm of width leaves both adults a usable share rather than a sliver each. The breathable gel layer helps a little with the extra warmth, though a dog on the bed will always make things slightly warmer.