Silentnight UltraGel Pocket 2000 Pillowtop Cool King Size Mattress
The Silentnight UltraGel Pocket 2000 Pillowtop Cool Mattress pairs 2000 Mirapocket® springs with a gel-infused comfort layer and a cool-to-touch SensICE™ surface, which means it's aimed squarely at people who sleep warm.
- Cool-touch surface for hot sleepers
- Eases pressure at shoulders & hips
- 60-night trial & 5-year guarantee
£922.36
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Silentnight UltraGel Pocket 2000 Pillowtop Cool Mattress
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Mattress details
Mattress
Silentnight UltraGel Pocket 2000 Pillowtop Cool Mattress
Size
Firmness
Medium Soft
Construction
Foam
Pocket Spring
Memory Foam
Gel
Depth (cm)
33
Layers
4
Layer Details
Cool-to-touch sleep surface
The UltraGel™ cool-to-touch layer uses hyper-conductive technology woven into the surface fabric, which means the mattress feels instantly cool when you lie down. It's the feature to care about if overheating regularly wakes you.
Gel-infused layer
This gel-infused foam responds to your movements and is 5x more breathable than standard memory foam, according to Silentnight. In practice, that means the contouring of foam with less of the heat build-up.
Pillowtop
A pillowtop surface adds a plush, cushioned top to the mattress. It gives that sink-in, hotel-bed feel rather than a firmer sleeping surface.
Pocket spring support system
2000 Mirapocket® springs work independently, which means one side of the bed can move without disturbing the other. The zoning is scientifically proven, Silentnight says, to improve spinal alignment and posture.
Layer details from silentnight.co.uk product page, September 2026.
Key benefits
- Room to lie on your side: At 75cm per sleeper, you each get 7.5cm more than on a UK double, which means knees and elbows are less likely to end up on your partner's side.
- Length for a taller partner: The 200cm length is 10cm longer than a UK double, so someone over six foot has a better chance of keeping their feet on the mattress.
- Fewer knock-on wake-ups: The 2000 Mirapocket springs move independently, and with the extra width between you, an early riser climbing out is less likely to jolt the person still asleep.
- Cooler when two of you share: Two bodies trap more warmth than one, so the cool-to-touch UltraGel surface and the wider gap a UK king allows both help if you tend to wake up hot.
- A realistic fit for most master bedrooms: We suggest at least 2.7m x 2.9m for the UK king, so measure around wardrobes and doors first, as fitted furniture can make a room smaller than it looks.
This size suits you if...
You share every night and keep drifting into each other on a UK double, one of you is tall enough to feel cramped at 190cm long, or your alarms are set hours apart and one of you keeps disturbing the other.
Consider another size if...
Your bedroom is under our suggested 2.7m x 2.9m once furniture is in. We'd recommend the UK double instead, for which we suggest at least 2.6m x 2.8m.
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FAQ's
Is the Silentnight UltraGel Pocket 2000 UK king big enough for two adults?
Yes for most couples. The UK king gives you 75cm each, which is 7.5cm more per person than the UK double. If one of you sprawls, or a dog regularly joins you, the UK super king gives 90cm each, so the UK king offers 15cm less each by comparison.
Silentnight UltraGel king or super king for a couple?
The UK king suits couples who want a clear step up without giving over the whole room. The UK super king adds width but no length, as both are 200cm long. We suggest at least 3m x 2.9m for the UK super king, against 2.7m x 2.9m for the UK king.
Is the UltraGel Pocket 2000 UK king long enough for a tall person?
It's the longer option in this range. At 200cm, or 6ft 6in, the UK king is 10cm longer than the UK double, and it matches the UK super king for length. If height rather than width is your main problem, that extra 10cm over a UK double is the part of the upgrade you'll notice most.
Will I feel my partner move on the UltraGel Pocket 2000 in a UK king?
Less than on a smaller size, most likely. The 2000 Mirapocket springs respond independently, and the UK king puts more distance between you than a UK double. The pillowtop is soft, though, so a heavier partner rolling towards the middle may still be felt a little.
Is a UK king UltraGel Pocket 2000 good during pregnancy?
It can be a sensible choice. The medium soft pillowtop gives some cushioning at the hips and shoulders for side sleeping, and the UK king's width leaves room for a pregnancy pillow without pushing your partner towards the edge. If you'll need a firmer surface to get in and out easily, check the feel suits you first.