Hypnos Cotton Comfort Mattress
Mattress
Hypnos Cotton Comfort Mattress
Size
Firmness
Construction
Depth (cm)
26
Layers
3
Layer Details
- Cover. A breathable Belgian damask fabric top cover, which means air can move through the sleep surface rather than being trapped against you. That helps keep the mattress feeling fresh and a little cooler.
- Comfort Fillings. Soft cotton combined with Hypnos' eOlus fibres for total body cushioning. In practice this gives a gentle, natural-feeling surface that contours without the slow sink of memory foam.
- Support System. ReActive 6-Turn pocket springs, with six turns per spring, engineered for total spinal and body support. Each spring moves independently, which means less partner disturbance and support that follows the shape of your body.
Layer details from mattressnextday.co.uk product page, September 2026.
- Proper space for two: At 75cm each for two people sharing, you can change position freely without negotiating territory in the small hours.
- Springs that keep movement local: Each ReActive 6-Turn pocket spring compresses on its own, which means a partner turning over on their side of the king barely registers on yours.
- Length for taller sleepers: At 200cm, the UK king is 10cm longer than the UK Double, so anyone approaching six foot stops sleeping with their feet at the edge.
- Cooler sharing: Two bodies raise the temperature under a duvet, and the cotton fillings with the breathable Belgian damask cover let that heat move away rather than build.
- A medium feel that suits mixed couples: The medium firmness works for a back sleeper and a side sleeper sharing the same surface, a common pairing at this size.
This size suits you if...
You share the bed every night and a double has started to feel like a compromise, especially if one of you gets up hours before the other and you want their movement to stay on their side. It also fits if either partner is approaching six foot and needs the 200cm length, or if a dog has quietly claimed a regular patch of the mattress.
Consider another size if...
Your bedroom falls short of the 2.7m x 2.9m we suggest for a UK king, or you sleep alone. In either case we'd recommend the UK double instead, which needs a smaller room at 2.6m x 2.8m minimum.
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Is a UK king worth it for couples on the Hypnos Cotton Comfort?
For most sharing couples, yes. You get 75cm each for two people sharing, and because the ReActive pocket springs respond individually, the extra distance between you does noticeably more to reduce disturbance than it would on an open coil mattress. If one of you keeps early hours, that combination is the main reason to size up.
Will the Hypnos Cotton Comfort king suit a tall sleeper?
At 200cm long, the UK king suits sleepers approaching six foot who find a 190cm mattress leaves their feet at the edge. The UK king is 10cm longer than the UK Double, so for a tall couple the length is often as big an upgrade as the width.
How much bigger is the king than the double in this mattress?
The UK king is 15cm wider than the UK Double and 10cm longer, at 150 x 200cm against 135 x 190cm. That 15cm sounds modest on paper, but split across a shared bed it is the difference between touching elbows and turning over freely.
What room size do you need for the Hypnos Cotton Comfort in a king?
We suggest at least 2.7m x 2.9m, with around 3.2m x 3.2m feeling comfortable once wardrobes and bedside tables are in. Measure a new build master carefully before ordering; they often look roomier empty than they are furnished. If yours is tighter, we suggest at least 2.6m x 2.8m for the UK Double.
Where can I buy the Hypnos Cotton Comfort in a UK king?
Compare the retailers listed on this page; the prices shown here are updated as retailers change them, so it's worth checking back rather than relying on a figure you saw last week. Sizing and the medium feel are identical wherever you buy, so price is the sensible deciding factor.