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.
- More room each: At 75cm per sleeper, the UK king gives each of you 7.5cm more than a UK double, which means fewer elbows and knees meeting in the middle.
- Length for taller partners: The 200cm length, 6ft 6in in old money, is 10cm longer than a UK double, so a tall sleeper can lie straight without feet hanging over the edge.
- Early starts felt less: The pocket springs work independently, so if one of you gets up hours before the other, the movement stays mostly on their side of the bed.
- Cooler when sharing: Two people under one duvet add warmth, and the breathable gel layer helps disperse heat rather than trapping it across the whole surface.
- Fits more rooms than a super king: The UK king is 30cm narrower than the UK super king, so we suggest a room of at least 2.7m x 2.9m rather than 3m x 2.9m.
This size suits you if...
You share the bed every night and a UK double has started to feel cramped, or one of you is around six foot and would gain most from the extra 10cm of length.
Consider another size if...
Your bedroom is smaller than our suggested 2.7m x 2.9m, or you want 90cm each. We'd recommend the UK double for the smaller room, or the UK super king for more space.
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Is the Silentnight UltraGel 3000 UK king big enough for two people?
For most couples, yes. The UK king gives you 75cm each, which is 7.5cm more per person than the 67.5cm on a UK double. If you both sprawl, or a child or dog often joins you, the UK super king offers 90cm each, although it needs a bigger room.
Will my partner getting up early disturb me on a UltraGel 3000 king size?
You should notice it less than on a smaller size. The pocket springs move independently, so their weight stays on their side, and the UK king puts 75cm between each of you. Pocket springs reduce movement rather than removing it, so a very light sleeper may still feel a little.
Is the UltraGel 3000 in a UK king long enough if you're over 6ft?
At 200cm, or 6ft 6in, the UK king is 10cm longer than a UK double, which makes a real difference for anyone near or over six foot. The UK super king is the same length, so sizing up only adds width. For length alone, the UK king is enough.
What size bedroom do I need for a Silentnight UltraGel 3000 king?
We suggest a room of at least 2.7m x 2.9m, with 3.2m x 3.2m giving comfortable space to walk around both sides. New build master bedrooms can feel smaller once wardrobes go in, so measure the free floor space rather than the whole room.
Should I get the UltraGel 3000 in a UK king or a UK super king?
The UK king is 30cm narrower than the UK super king and gives 15cm less each, though both are 200cm long. If your room is at least 3m x 2.9m and you want 90cm each, the UK super king suits. Otherwise the UK king gives most couples plenty of room.