Sleepeezee Cool Response Gel Hybrid King Size Mattress
The Sleepeezee Cool Response Gel Hybrid pairs 1000 pocket springs with a layer of StayCool™ Gel, which means you get responsive support underneath and a gently cushioned, cooler-feeling surface on top.
- Cooling gel steadies temperature
- Minimises partner disturbance
- Gentle cushioning without sinking
£649
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Sleepeezee Cool Response Gel Hybrid Mattress
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Mattress details
Mattress
Sleepeezee Cool Response Gel Hybrid Mattress
Size
Firmness
Medium
Construction
Hybrid
Gel
Depth (cm)
27
Layers
3
Layer Details
Cool-Touch Cover
A soft Cool Touch cover that helps maintain the correct temperature through the night. You'll feel it most on warm evenings, when the surface stays a little cooler against your skin.
StayCool™ Gel
A generous layer of StayCool™ Gel that gently moulds to your body shape, which means personalised cushioning without the enveloping hug of traditional memory foam. The gel is also part of the mattress's temperature-management story.
Pocket Springs
Individually pocketed springs at medium tension provide targeted support, each one adapting independently to your movements. That independence helps limit motion transfer if you share the bed.
Layer details from mattressnextday.co.uk product page, September 2026.
Key benefits
- Room to lie apart: At 75cm each, you gain 7.5cm per person over the UK double, which means elbows and knees meet in the middle far less often.
- Extra length for taller partners: The 200cm length is 10cm longer than a UK double, so a partner approaching 6ft can stretch out with their feet still on the mattress.
- Calmer for split schedules: If one of you gets up in the dark hours before the other, independently moving springs and extra width help keep that exit from jolting the sleeper left behind.
- Cooler with two bodies sharing: Two people give off more warmth, and the Cool-Touch cover and gel layer are designed to keep the surface temperature steadier across the full 150cm width.
- Easier to fit than a super king: We suggest at least 2.7m x 2.9m for the UK king, compared with 3m x 2.9m for the UK super king, which helps in a new build main bedroom once fitted wardrobes are in.
This size suits you if...
You share every night and keep bumping into each other on a UK double, one of you is approaching 6ft and wants the extra 10cm of length, or your alarms go off hours apart and you want less disturbance.
Consider another size if...
Your bedroom is smaller than our suggested minimum of 2.7m x 2.9m. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m.
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FAQ's
Is the Sleepeezee Cool Response UK king long enough for a tall person?
At 200cm, the UK king is 10cm longer than the UK double and the same length as the UK super king. If one of you is approaching 6ft, the extra length makes the most difference, because your feet stay on the mattress rather than resting at the edge.
How much space per person on a Sleepeezee Cool Response king size?
Two people sharing get 75cm each. That is 7.5cm more than the 67.5cm each on a UK double, and 15cm less than the 90cm each on a UK super king. For most couples moving up from a double, it is enough to stop sleeping shoulder to shoulder.
Will I feel my partner move on the Cool Response Gel Hybrid in a UK king?
Less than on a narrower size. The pocketed springs move independently, and the 150cm width puts more distance between you. If one partner rises early, you may still notice a little movement, but it should be gentler than on a UK double.
What size bedroom do I need for a UK king Sleepeezee Cool Response?
We suggest at least 2.7m x 2.9m, and 3.2m x 3.2m is more comfortable if you want bedside tables and space to walk round the bed. Measure after the wardrobes go in, because fitted storage often makes a new build bedroom smaller than the floor plan suggests.
Should we get the UK king or UK super king Cool Response if the dog sleeps with us?
The UK super king is 30cm wider and gives 90cm each against 75cm, so a regular canine guest has more room without crowding you. It needs at least 3m x 2.9m, though. If your room cannot take that, the UK king is still a clear step up from the UK double.