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.
- Fits a typical shared bedroom: We suggest allowing at least 2.6m x 2.8m for a UK double, so most main bedrooms take this mattress and still leave walking space around the bed.
- Cooler when two of you share: The Staycool™ gel layers disperse excess heat, which means sharing 67.5cm each should feel a little less clammy than it would on a plain foam mattress.
- Simple to dress: Bedding for 135 x 190cm is stocked almost everywhere, although the 35cm depth means you'll need deep-pocket fitted sheets rather than standard ones.
- Sensible for a spare room: In a second bedroom, a UK double sleeps a visiting couple for a few nights and still leaves space for drawers against the wall.
- Room for a pet: If you sleep alone, the UK double gives a dog or cat its own corner while you keep enough space to stretch out comfortably.
This size suits you if...
You share the bed with a partner and want medium firm support without giving up your bedside tables, your bedroom meets our suggested minimum of 2.6m x 2.8m, or you're kitting out a guest room where visiting couples will stay.
Consider another size if...
You and your partner both sleep broad or tall and find 67.5cm each too tight. We'd recommend the UK king instead, and we suggest at least 2.7m x 2.9m for it.
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How much space does each person get on a Sleepeezee Gel 4000 UK double?
A UK double gives two sharers 67.5cm each. That suits most couples, particularly if one of you sleeps fairly still. If you tend to sprawl, the UK king gives 75cm each, which is 7.5cm more per person.
Will a Sleepeezee Gel 4000 UK double fit in my bedroom?
We suggest a room of at least 2.6m x 2.8m for a UK double, and around 3m x 3m feels comfortable. At that size you can usually fit bedside tables on both sides and still open wardrobe doors without squeezing past the bed.
What fitted sheets fit the Sleepeezee Gel 4000 double?
You need a double fitted sheet made for a 135 x 190cm mattress. This mattress is 35cm deep, so choose a deep-pocket sheet, because standard sheets often struggle to stay tucked under the corners. For the duvet, a 200 x 200cm double works well.
Is it worth sizing up from a UK double to a UK king in the Sleepeezee Gel 4000?
Yes, if your room allows it. The UK king is 15cm wider and 10cm longer than the UK double, which gives each sharer 7.5cm more. It also needs more floor space, and we suggest at least 2.7m x 2.9m for it.
Is a Sleepeezee Gel 4000 UK double good for a guest room?
It suits most guest rooms. A UK double sleeps visiting couples properly and still fits alongside a wardrobe and drawers in a modest second bedroom. The medium firm feel with a pillow top also suits a range of guests, although anyone who likes a soft, sink-in bed may find it too supportive.