Sleepeezee Gel 4000 Pocket Hybrid Ortho Mattress
Mattress
Sleepeezee Gel 4000 Pocket Hybrid Ortho Mattress
Size
Firmness
Construction
Depth (cm)
35
Layers
5
Layer Details
- Pillow Top. A plush pillow-top layer stitched into the mattress, acting like a built-in topper. It gives that hotel-style softness the moment you lie down.
- Profiled Staycool™ Gel. Multiple layers of profiled Staycool™ gel gently contour to your body while dispersing excess heat. In practice, that means cushioning at pressure points without the warmth build-up some foams cause.
- Soft Polyester Layers. Soft polyester layers sit beneath the gel, adding comfort without compromising support. They help the transition from the softer top into the firmer core feel gradual rather than abrupt.
- High Density Polyester. A high-density polyester layer maintains the mattress's structure and durability. This is what helps the mattress hold its shape over years of use.
- 4000 Pocket Spring System. A dual-layer orthopaedic construction combining 1,000 traditional pocket springs with 3,000 mini comfort springs, 4,000 in total. The traditional springs handle deep support while the mini springs fine-tune how the surface responds to your body.
Layer details from mattressnextday.co.uk product page, September 2026.
- Room for two: At 75cm each for two sharing, the UK king gives you 7.5cm more each than a UK double, so you can turn over without meeting a shoulder.
- Extra length for taller sleepers: The UK king is 10cm longer than the UK double, which means a partner over six foot is less likely to have their feet off the end.
- Space between different schedules: If one of you gets up hours before the other, a wider gap between you gives the sleeper left behind a slightly better chance of staying asleep.
- Room to prop and reposition: The 150cm width leaves space for a pregnancy pillow or extra cushions along one side while your partner still keeps a proper half.
- A step short of a super king: You get most of the benefit of a bigger bed without needing the larger floor space we suggest for a UK super king.
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 tall enough that the extra 10cm of length makes a real difference.
Consider another size if...
Your bedroom is smaller than our suggested minimum of 2.7m x 2.9m, or you sleep alone. We'd recommend the UK double instead, for which we suggest at least 2.6m x 2.8m.
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Is the Sleepeezee Gel 4000 UK king big enough for two people?
For most couples, yes. The UK king gives 75cm each for two sharing, which is enough to sleep on your own side rather than drifting into the middle. If one of you sprawls or a dog regularly joins you, the UK super king gives 90cm each.
Should I get the Sleepeezee Gel 4000 in a UK king or a UK double?
If you share every night, the UK king is the more comfortable choice. It is 15cm wider than the UK double, giving 7.5cm more each, and 10cm longer. The UK double is better if your room is tight. We suggest at least 2.6m x 2.8m for the UK double.
Is a UK king Sleepeezee Gel 4000 long enough for someone over 6ft?
The UK king measures 5ft x 6ft 6in (150 x 200cm), so it is 10cm longer than a UK double. For a partner approaching or just over six foot, that extra length means your feet stay on the mattress and you are less tempted to sleep diagonally.
Will a Sleepeezee Gel 4000 UK king fit in my bedroom?
We suggest a room of at least 2.7m x 2.9m for a UK king. Measure after the wardrobes are in, because a new build master bedroom can feel much smaller once furniture takes its share. If you fall short, the UK double needs less floor space.
Sleepeezee Gel 4000 UK king vs UK super king: which is better for couples?
The UK king is 30cm narrower than the UK super king but the same length, giving you 15cm less each. The UK king suits most couples. Choose the UK super king if you want 90cm each and have a room of at least 3m x 2.9m.