Sleepeezee Cosmic 3000 Combination Mattress
The Sleepeezee Cosmic 3000 Combination Mattress pairs graphite-infused memory foam with micro and pocket springs under a plush pillow top, which means a soft-feeling surface that works to keep heat away.
- Cooler sleep with graphite foam
- Plush pillow top cushioning
- Supportive edges, no roll-off feeling
£899
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The Sleepeezee Cosmic 3000 Combination Mattress is a 33cm deep hybrid with a plush pillow top, graphite-infused memory foam and layers of micro and pocket springs. It's aimed at people who sleep warm and want a cushioned surface with support underneath. It comes in a UK single, UK small double, UK double, UK king and UK super king. Dreams offers a 100-night trial. Sleepeezee doesn't publish a firmness rating.
Mattress specifications
Firmness
Type
Hybrid
Depth (cm)
33
Number of Layers
3
Trial Period (nights)
Warranty (years)
Price Range
£899 to £1,599
Certifications
Assessed from the specification published by dreams.co.uk, captured November 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
The graphite memory foam is there to draw away heat and moisture, and the Breeze 3D knit cover is up to 40% more breathable, so it should suit anyone who tends to overheat. The plush pillow top adds cushioning, while the micro and pocket springs underneath give tailored support. Reinforced edges and edge-to-edge support are meant to stop that roll-off feeling, so you can use the whole bed. It's made in the UK. Suits sleepers who want a cushioned feel without losing support, although you'll want to check the firmness suits you.
Key features & layer details
Plush pillow top
A pillow top finished with reinforced edges. It adds cushioning to the surface, and the reinforced edges help the sides feel steadier.
Graphite-infused memory foam
A memory foam infused with graphite, which draws away heat and moisture. That should help you stay cooler through the night.
Micro and pocket springs
Layers of micro and pocket springs, with 3,000 springs in total, though Sleepeezee doesn't give a size. They provide tailored support and cooling comfort underneath the foam.
Layer details from dreams.co.uk product page, November 2026.
Best suited for?
Warm sleepers
Graphite-infused memory foam draws away heat and moisture, and the Breeze 3D knit cover is up to 40% more breathable, so the bed should stay cooler.
Couples
Reinforced edges and edge-to-edge support are meant to stop that roll-off feeling, so two people can use the whole width of the bed.
Side sleepers
The plush pillow top adds cushioning at the surface, while micro and pocket springs underneath give tailored support, a pairing that suits those wanting a softer feel.
Sleepeezee doesn't publish a firmness for this mattress, so you can't tell in advance how it will feel. The plush pillow top suggests a cushioned surface, so if you need a very firm, flat feel, this might not be the best choice. It's also a deep, premium mattress, so check your bed frame can take 33cm.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Sleepeezee Cosmic 3000 Combination Mattress
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FAQ's
How firm is the Sleepeezee Cosmic 3000 Combination Mattress?
Sleepeezee doesn't publish a firmness rating for it. It has a plush pillow top, which points to a cushioned surface, so if firmness matters to you, it's worth checking the feel before you buy.
What sizes does the Sleepeezee Cosmic 3000 come in?
It comes in a UK single, UK small double, UK double, UK king and UK super king. If you need a UK small single, it isn't offered, so check the size you need before you order.
How deep is the Sleepeezee Cosmic 3000 Combination Mattress?
It's 33cm deep, which is a fairly tall mattress. Check your bed frame and any fitted sheets you plan to use will cope with that depth.
Is the Sleepeezee Cosmic 3000 good for hot sleepers?
It's built with warm sleepers in mind. The graphite memory foam draws away heat and moisture, and the Breeze cover is up to 40% more breathable. Individual comfort varies, so it's not a guarantee for everyone.
Does the Sleepeezee Cosmic 3000 come with a trial?
Dreams offers a 100-night trial on it. That's Dreams' own offer rather than Sleepeezee's, so check Dreams' terms for how returns work before you buy.
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