Silentnight UltraGel CoolTouch 3000 Soft Mattress
Mattress
Silentnight UltraGel CoolTouch 3000 Soft Mattress
Size
Firmness
Soft
Construction
Depth (cm)
37
Layers
5
Layer Details
- Cool-to-touch sleep surface. The SensICE fabric gives an instant cooling effect against your skin, drawing heat away from your body. In practice, that means the bed feels cool when you climb in rather than warming up straight away.
- Gel infused comfort layer. A responsive gel infused layer that adapts as you move and bounces back. You get cushioning without the slow, stuck-in feeling some soft foams can have.
- Extremely breathable foam. Silentnight states this foam is 5X more breathable than memory foam, working alongside the gel layer. Air moves through it more freely, which helps stop heat gathering under you overnight.
- Plush pillowtop. A boxtop layer that adds a soft, soothing top surface. It's a big part of why this mattress feels so cushioned on first contact.
- Spring support system. 2,000 Mirapocket springs combine with 1,000 mini springs for pressure relief and undisturbed sleep. Each spring moves on its own, so you feel supported where you need it and less of your partner's movement.
Layer details from silentnight.co.uk product page, September 2026.
- More room each: At 75cm per sleeper, the UK king gives you 7.5cm more each than a UK double, which means fewer knees and elbows crossing into your half overnight.
- Less disturbance from early risers: The 2,000 Mirapocket springs move independently, and the extra width puts a little more distance between you, so a partner up at dawn is less likely to wake you.
- Length for anyone over six foot: At 200cm long, the UK king is 10cm longer than a UK double, so a tall sleeper's feet stay on the pillowtop instead of hanging off the end.
- A cooler soft bed for two: Two people sinking into a soft mattress can build up heat, and the SensICE surface plus the extra width help stop you lying pressed together and warm.
- Fits rooms a super king won't: We suggest allowing at least 2.7m x 2.9m for the UK king, compared with at least 3m x 2.9m for the UK super king.
This size suits you if...
You share the bed every night and have started to feel cramped on a UK double, or one of you is over six foot and wants the extra length as much as the extra width, particularly if you keep different hours and would rather not feel each other getting up.
Consider another size if...
Your bedroom is smaller than our suggested 2.7m x 2.9m once wardrobes are in. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m.
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Is the UltraGel CoolTouch 3000 UK king big enough for two people?
For most couples, yes. The UK king gives you 75cm each, which is 7.5cm more each than a UK double. If you regularly share with a dog or still feel crowded, the UK super king gives 90cm each, although it needs a larger room of at least 3m x 2.9m.
Is the Silentnight UltraGel CoolTouch 3000 UK king long enough for tall sleepers?
The UK king is 200cm long, or 6ft 6in, which is 10cm longer than a UK double. If one of you is over six foot, that extra length is often the more noticeable upgrade, because the soft pillowtop feels far less comfortable when your feet end up at the edge.
UK king or UK super king for the UltraGel CoolTouch 3000?
The two are the same length, so the choice comes down to width and room size. The UK king is 30cm narrower and gives 15cm less each. We suggest at least 2.7m x 2.9m for the UK king and at least 3m x 2.9m for the UK super king, so measure before deciding.
Will I feel my partner moving on a soft king size mattress?
Less than on a smaller size of the same mattress. The independent Mirapocket springs limit how far movement travels, and the UK king adds 7.5cm each over a UK double. On a soft pillowtop you both sink in a little, so a very restless partner may still be felt slightly.
What fitted sheet fits a 37cm deep UK king mattress?
You need a UK king fitted sheet sized for 150 x 200cm with a deep pocket, since standard sheets may not reach under a 37cm mattress. For the top of the bed, a 230 x 220cm king duvet suits this size.