Silentnight UltraGel 2000 Pocket Box Top Super King Mattress
The Silentnight UltraGel 2000 Pocket Box Top is a hybrid mattress that pairs 2000 Mirapocket springs with a gel infused comfort layer and a deep boxtop, which means you get spring support underneath with a soft, cushioned surface on top.
- Cooling gel draws heat away
- Box top spreads pressure evenly
- 60-night trial & 5-year guarantee
£1,091.35
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Silentnight UltraGel 2000 Pocket Box Top Mattress
More available sizes
Mattress details
Mattress
Silentnight UltraGel 2000 Pocket Box Top Mattress
Size
Firmness
Medium
Construction
Foam
Pocket Spring
Hybrid
Gel
Depth (cm)
33
Layers
3
Layer Details
UltraGel comfort layer
A gel infused layer that responds as you move, with cooling foam designed to chill and relax your body. In practice, this means less of the heat build-up you can get with standard foam.
Boxtop
A sumptuous boxtop with advanced gel foam that spreads pressure and bodyweight evenly, which means fewer pressure points at your hips and shoulders. It adapts as you change position through the night.
Mirapocket springs
2000 Mirapocket springs, each in its own fabric pocket, so each one responds to your body independently. The zoned support is scientifically proven, according to Silentnight, to improve spinal alignment and posture.
Layer details from silentnight.co.uk product page, September 2026.
Key benefits
- Space that does the work: At 90cm each for two people sharing, distance handles what no comfort layer can: a partner who turns all night simply happens further away.
- 2000 springs across a wider bed: The Mirapocket springs respond independently, which means movement on one side of a 180cm mattress barely registers on the other.
- Soft surface, shared fairly: The gel infused boxtop spreads pressure evenly across the full width, so nobody ends up on a lesser patch of mattress.
- Room for the whole household: When children or a large dog treat your bed as theirs, the extra 30cm over a UK king keeps everyone with a genuine share.
- Cooling matters more with company: More bodies mean more heat, and the gel layer is designed to draw warmth away, useful when you rarely sleep two to a bed.
This size suits you if...
You share the bed every night and want the most sleeping space a standard UK size offers, your partner is restless enough that a UK king still feels close, or children and pets join you often enough that 90cm each is the difference between sleeping and negotiating. Your room should measure at least 3m x 2.9m for the bed to sit comfortably.
Consider another size if...
Your bedroom falls short of the 3m x 2.9m we suggest, or you sleep alone and the width would go unused. We'd recommend the UK king instead: it's 30cm narrower, the same length, and needs a room of at least 2.7m x 2.9m.
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FAQ's
How big is the Silentnight UltraGel 2000 in a super king?
The UK super king measures 180 x 200cm, which is 6ft x 6ft 6in. This mattress is also 33cm deep, so it's a substantial piece once it's in place. Check door swings and landing turns before you order, because a mattress this size can be awkward on tight staircases.
What room size do I need for a super king UltraGel 2000?
We suggest a minimum of 3m x 2.9m, and closer to 3.5m x 3.2m if you want to walk around it without shuffling sideways. In a large master or a period property with generous proportions, a UK king can actually look undersized, and the UK super king fills the space properly.
Should I choose the UltraGel 2000 in a UK king or super king?
The UK super king is 30cm wider than the UK king and they're the same length, so the choice is purely about width and room size. If two of you share with a restless sleeper, a child or a dog in the mix, the extra width is where this mattress makes sense. Smaller rooms suit the UK king better.
Is the super king Silentnight UltraGel 2000 good for restless partners?
It's a strong pairing. The 2000 Mirapocket springs each sit in their own fabric pocket and move independently, so turning over transfers little motion. Spread that across 180cm of width, with 90cm each, and a partner who shifts constantly becomes far easier to sleep through than on a narrower size.
Is a super king UltraGel 2000 big enough for kids climbing in?
It's the size best suited to it. With 90cm per adult to start from, a small visitor at 3am doesn't push anyone to the edge. The soft boxtop is forgiving for little ones too. Bear in mind the medium soft feel: heavier adults who sink through softer layers may still find it too yielding, whatever the size.