SleepSoul Wish 3000 Series Pocket Cool Gel King Size Mattress
The SleepSoul Wish 3000 Series is a hybrid mattress that pairs pocket springs with cool gel memory foam and a plush pillow top, which means you get contouring comfort with a slightly cooler feel than standard memory foam.
- Plush pillow top eases hips & shoulders
- Cool gel memory foam limits heat
- Suits back & combination sleepers
£449
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SleepSoul Wish 3000 Series Pocket Cool Gel Mattress
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Mattress details
Mattress
SleepSoul Wish 3000 Series Pocket Cool Gel Mattress
Size
Firmness
Medium Firm
Construction
Pocket Spring
Hybrid
Gel
Depth (cm)
30
Layers
3
Layer Details
Pillow Top
An extra layer of plush fillings sewn onto the surface, which means a softer, more cushioned first impression when you lie down. It gives the medium firm core a gentler feel on pressure points like hips and shoulders.
Cool Gel Memory Foam
This foam contours to your body for pressure relief and support, while the gel helps regulate body temperature better than standard memory foam. In practice, you get the hug of memory foam with less of the heat build-up.
Pocket Springs
Each spring sits in its own fabric pocket and moves independently, which means the mattress responds to your body shape rather than pushing back as one unit. That independence also helps reduce disturbance when a partner moves.
Layer details from mattressnextday.co.uk product page, September 2026.
Key benefits
- Room to spread out: You each get 75cm of width, which means an elbow or a turned shoulder is less likely to land on your partner's side of the bed.
- Quieter when schedules differ: The pocket springs move independently, so an early riser climbing out at dawn sends less movement across the extra width to the person still asleep.
- Length for taller partners: At 200cm long, the UK king is 10cm longer than the UK double, a real relief if one of you is over six foot and used to overhanging feet.
- More plush surface to share: The pillow top runs the full 150cm width, so both of you get the same cushioned feel on hips and shoulders, with no narrow strip in the middle.
- A cooler shared bed: Two bodies generate more heat, and the cool gel memory foam handles warmth a little better than standard memory foam, which helps couples who run slightly warm.
This size suits you if...
You share the bed every night and feel squeezed on a UK double, or one of you gets up hours before the other and you'd like fewer wake-ups. It also fits if one partner is over six foot and the extra length matters as much as the width.
Consider another size if...
Your bedroom is smaller than our suggested 2.7m x 2.9m. 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 SleepSoul Wish 3000 UK king big enough for two adults?
For most couples, yes. 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, 15cm more per person, although it needs a larger room.
Will a UK king Wish 3000 fit in a new build master bedroom?
Allow at least 2.7m x 2.9m, with 3.2m x 3.2m comfortable. New build master bedrooms can shrink quickly once fitted wardrobes go in, so measure the floor space that's actually free, not the plan dimensions. If you're short of 2.7m x 2.9m, the UK double is a better fit.
Is the Wish 3000 UK king long enough for someone over 6ft?
At 200cm, or 6ft 6in, it is 10cm longer than the UK double, the UK small double and the UK single. For a partner over six foot that extra length is often the real reason to upgrade, because feet stop hanging off the end.
Should I get the Wish 3000 in a UK king or a UK super king?
The UK king and UK super king are the same length, so the choice comes down to width. The UK super king is 30cm wider and needs at least 3m x 2.9m by our guidance. If your room fits 2.7m x 2.9m but not more, the UK king is the practical choice.
Does a UK king Wish 3000 help if my partner and I work different shifts?
It should help. The extra width puts more distance between you, and the pocket springs respond individually, so one of you getting in or out causes less movement on the other side. Across a UK king that combination suits couples on very different hours.