Hypnos Clinton Cotton Deluxe Mattress
Mattress
Hypnos Clinton Cotton Deluxe Mattress
Size
Firmness
Medium
Construction
Depth (cm)
26
Layers
5
Layer Details
- Sleep surface. A pure unbleached cotton sleep surface, free of harmful chemicals. It's a soft, breathable first point of contact.
- Comfort fillings. Generous layers of cotton and wool, including about 4kgs of traceable British Red Tractor wool, which means good temperature regulation and breathability. The cotton is naturally hypoallergenic, a helpful touch if you're sensitive to dust or synthetics.
- Resilience layer. A plush Solotex polyester fibre filling made from recycled materials, designed for durability. It promotes airflow while adding a cushioned feel between you and the springs.
- Support system. 1000 ReActivePro pocket springs, each with six active turns, so the mattress reacts faster to your movements. That translates to pressure relief and spinal alignment tailored to how you actually sleep.
- Edge support. The Triple Edge Protection system uses three rows of firmer springs around the perimeter for edge-to-edge support. Two rows of traditional hand side-stitching finish the job, a sign of proper craftsmanship.
Layer details from mattressonline.co.uk product page, September 2026.
- 90cm each for two sharing: Each of you gets 90cm of width, which means a partner who turns over frequently can do so without dragging you awake.
- Pocket springs that work at this width: The 1000 ReActivePro springs compress individually, so movement on one side of a 180cm-wide bed barely registers on the other.
- Space for the whole household: If children or a large dog routinely join you in the night, the UK super king means everyone keeps a workable share of the mattress.
- Natural fillings across a bigger surface: Cotton and wool breathe well, and on a bed this size two warm bodies are far enough apart to stay cooler still.
- Edges you can actually use: Three rows of firmer perimeter springs and hand side-stitching mean the outer inches are usable sleeping space, which matters when a child claims the middle.
This size suits you if...
You share the bed every night and find a UK king still leaves you aware of every turn your partner makes, your children or pets treat your bed as their own in the small hours, or you have a large master bedroom where a smaller mattress would look lost. Allow at least 3m x 2.9m of floor space before committing.
Consider another size if...
Your bedroom falls short of the 3m x 2.9m we suggest for the UK super king, or you sleep alone. We'd recommend the UK king instead: it's 30cm narrower, the same length, and we suggest at least 2.7m x 2.9m for it.
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Is a super king too big for my bedroom?
It might be. The UK super king measures 180 x 200cm, and we suggest a room of at least 3m x 2.9m so you can walk round the bed and open drawers. Check door swing too, since a bed this wide sits closer to everything. If your room is tighter, the UK king is 30cm narrower and the same length.
Is the Hypnos Clinton Cotton Deluxe super king good for couples?
It's arguably the size where this mattress makes most sense for two. You get 90cm each, and the 1000 pocket springs respond to each sleeper independently, so one person shifting position is far less likely to disturb the other. The firmer perimeter springs also mean neither of you loses usable space at the edges.
Will a super king mattress get up my stairs?
This is the size where staircases start to bite. At 6ft x 6ft 6in, a pocket spring mattress like this one can't be folded or bent round tight landing turns, so measure your stairwell, landing and door frames before ordering. If access is genuinely awkward, sizing down to the UK king removes 30cm of width.
Do children sharing the bed still leave room in a super king?
More than in any other standard size. With 180cm of width, a child wandering in at 3am can settle between you and both adults still keep a reasonable stretch of mattress. The cotton and wool fillings breathe well too, which helps when three warm bodies share one bed.
How much wider is a super king than a king?
The UK super king is 30cm wider than the UK king, and the two are the same length. That extra width is the difference between 90cm each and noticeably less, which is why restless couples tend to feel the upgrade immediately. It does need a bigger room: we suggest 3m x 2.9m rather than the 2.7m x 2.9m for the UK king.