SleepSoul Heaven Cool Gel 3000 Pocket Pillowtop Super King Mattress
The SleepSoul Heaven Cool Gel 3000 Pocket Pillowtop Mattress pairs a plush pillow top with a CoolGel foam layer, which means a softer-feeling surface that helps disperse heat on a medium firm base.
- CoolGel foam disperses heat
- Plush pillow top cushioning
- Turning handles for easy rotating
£615
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SleepSoul Heaven Cool Gel 3000 Pocket Pillowtop Mattress
More available sizes
Mattress details
Mattress
SleepSoul Heaven Cool Gel 3000 Pocket Pillowtop Mattress
Size
Firmness
Medium Firm
Construction
Foam
Gel
Pocket Spring
Rolled
Depth (cm)
30
Layers
3
Layer Details
Pillow top
A plush pillow top with 2cm of soft foam beneath the surface. It gives a cushioned, softer-feeling top without changing the medium firm rating.
CoolGel foam
A 3cm CoolGel layer that contours gently to your body and disperses heat. That means pressure-relieving comfort with less heat build-up.
Pocket spring core
1000 individually pocketed springs with up to 2000 mini pocket springs. Each spring moves on its own, which gives a supportive base that follows your shape.
Layer details from mattressnextday.co.uk product page, October 2026.
Key benefits
- Distance from a restless partner: With 90cm each, a partner who turns all night sits further from you, and because each spring moves on its own, less of that movement carries across.
- Space for a child at 3am: A small child who climbs in can settle in the middle while both adults keep a proper share, which is far harder to manage on a UK king.
- Room for a dog on the bed: If a large dog sleeps with you every night, the UK super king is 30cm wider than the UK king, so the dog gets a spot that isn't across your legs.
- Less heat with a crowded bed: The 3cm CoolGel layer is designed to disperse heat, which helps when two adults, plus perhaps a child or a dog, are warming the same mattress.
- Handles for a wide mattress: It's single-sided, so you rotate it head to toe rather than flip it, and the turning handles make moving a 6ft-wide mattress noticeably less awkward.
This size suits you if...
You share with a partner who tosses and turns, your children or a large dog regularly end up in the bed by morning, and your bedroom comfortably clears our suggested minimum of 3m x 2.9m.
Consider another size if...
Your bedroom is under 3m x 2.9m, or your stairs and landing are narrow. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m.
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FAQ's
Is a UK super king SleepSoul Heaven Cool Gel big enough for two adults and a child?
For a young child who joins you part way through the night, generally yes. Two adults get 90cm each, so a small child can lie between you without anyone being pushed to the edge. A child who sleeps in the bed every night, or an older child, will make it feel full sooner.
What size bedroom do I need for a UK super king pillowtop mattress?
We suggest at least 3m x 2.9m, and around 3.5m x 3.2m feels more comfortable once you add bedside tables. In a loft conversion, the slope of the ceiling usually decides which wall the headboard goes against, so measure the full-height wall first. Check that the door can still swing open past the bed frame.
How much more room does a UK super king give than a UK king?
The UK super king is 30cm wider than the UK king, and the two are the same length. Shared between two people, that's 15cm more each: 90cm on the UK super king against 75cm on the UK king. Choose the UK super king when width is your problem, as it adds no extra legroom.
What bedding fits the SleepSoul Heaven Cool Gel in super king?
You'll need super king sheets, and a 260 x 220cm duvet gives good coverage. The mattress is 30cm deep with a pillow top, so pick fitted sheets with deep pockets that will stretch over it properly. Check the pocket depth on the packet before you buy.
Will a UK super king SleepSoul Heaven mattress fit up my stairs?
At 6ft x 6ft 6in and 30cm deep, the UK super king is a bulky mattress to carry, and the tight spots are usually landing turns and bedroom doorways rather than the staircase itself. Measure every turn and door frame before ordering, then compare the retailers listed on this page.