SleepSoul Cooler Ortho 4000 Series Pocket Gel Double Mattress
The SleepSoul Cooler Ortho 4000 Series is a firm hybrid mattress that pairs pocket springs with cool gel memory foam, which means you get orthopaedic-style support with less of the heat build-up foam is known for.
- Cool-touch cover for hot sleepers
- Firm, targeted spring support
- Hypoallergenic & vegan friendly
£449
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SleepSoul Cooler Ortho 4000 Series Pocket Gel Mattress
More available sizes
Mattress details
Mattress
SleepSoul Cooler Ortho 4000 Series Pocket Gel Mattress
Size
Firmness
Firm
Construction
Foam
Pocket Spring
Hybrid
Memory Foam
Orthopaedic
Depth (cm)
26
Layers
3
Layer Details
Cooler™ Fabric Cover
A cool-feel knitted fabric cover that gives an instant cooling effect the moment you lie down. It also enhances breathability, helping air move through the mattress.
Cool Gel Memory Foam
Thick layers of memory foam infused with gel microbeads, which actively draw heat away from your body. That means the contouring comfort of memory foam without the warm, sticky feel it can sometimes have.
Pocket Springs
Firm pocket springs, each sitting in its own fabric pocket so they compress independently. This gives targeted support and pressure relief where your body needs it, rather than a uniform push-back.
Layer details from mattressnextday.co.uk product page, September 2026.
Key benefits
- Classic shared size: At 135 x 190cm, the UK double gives each of you 67.5cm, which suits couples who sleep fairly close and don't sprawl.
- Leaves room to move: We suggest at least 2.6m x 2.8m for the UK double, so a modest main bedroom can keep bedside tables on both sides.
- Cooler for two bodies: Two people generate more warmth than one, so the cool-touch cover and gel-infused foam are a sensible match for a shared UK double.
- Support on each side: The pocket springs compress individually, which means each of you is supported where you press down instead of the whole surface dipping towards the heavier sleeper.
- Sensible guest room pick: A firm UK double suits a spare room for visiting couples, although lightweight side sleepers staying over may find it a little unyielding.
This size suits you if...
You share the bed with a partner in a typical UK bedroom and want firm support without a king taking over the floor, or you're furnishing a first flat or second bedroom where the bed has to share space with a wardrobe and drawers.
Consider another size if...
You and your partner already feel short of elbow room, or either of you is tall. We'd recommend the UK king instead; allow at least 2.7m x 2.9m for it.
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FAQ's
How much space does each person get on a SleepSoul Cooler Ortho 4000 UK double?
The UK double gives 67.5cm each for two people sharing. That is enough for couples who sleep close together, but it feels snug if one of you sleeps like a starfish. The UK king gives 75cm each, so the UK double gives 7.5cm less per person.
Is it worth sizing up to the SleepSoul Cooler Ortho 4000 in a UK king?
If your room allows it, possibly. The UK king is 15cm wider and 10cm longer than the UK double, and gives 75cm each for two sharing. We suggest at least 2.7m x 2.9m for the UK king, against 2.6m x 2.8m for the UK double.
What are the SleepSoul Cooler Ortho 4000 UK double dimensions in feet?
The UK double measures 4ft 6in x 6ft 3in, which is 135 x 190cm. Check the internal measurements of your bed frame against those figures before buying, particularly if the frame is older or was bought abroad.
Will a SleepSoul Cooler Ortho 4000 UK double fit a bedroom with bedside tables?
We suggest allowing at least 2.6m x 2.8m for the UK double, with around 3m x 3m the comfortable norm. At that size, most rooms can take a bedside table on each side and still leave space to walk around the bed.
Is the SleepSoul Cooler Ortho 4000 UK double long enough for tall sleepers?
The UK double is 190cm long, the same length as the UK single and UK small double. If either of you finds your feet at the very edge, the UK king adds 10cm of length and needs at least 2.7m x 2.9m of room.