Hypnos Clinton Cotton Deluxe King Size Mattress
The Hypnos Clinton Cotton Deluxe is a 26cm deep pocket spring mattress handcrafted in the UK, with 1000 ReActivePro 6-turn pocket springs and natural fillings including cotton and around 4kgs of traceable British Red Tractor wool.
- Cotton & wool keep hot sleepers cool
- Strong edges, no roll-off feeling
- Responds quickly as you move
£1,069
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Hypnos Clinton Cotton Deluxe Mattress
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Mattress details
Mattress
Hypnos Clinton Cotton Deluxe Mattress
Size
Firmness
Medium
Construction
Pocket Spring
Wool
Natural
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.
Key benefits
- 75cm each for two sharing: At 150cm wide, each of you gets 75cm, which means you can settle in your preferred position rather than negotiating for space all night.
- Extra length for taller sleepers: The 200cm length, 10cm more than the UK double, matters if one of you is nudging six foot and tired of feet hanging over the end.
- Pocket springs suit different schedules: The 1000 six-turn pocket springs respond individually, so an early alarm on one side is less likely to travel across the wider surface and wake the other.
- Natural fibres across a bigger surface: Cotton and wool fillings breathe well, which helps when two bodies share one bed and the temperature under the duvet creeps up.
- Edges you can actually use: Three rows of firmer perimeter springs and hand side-stitching mean the outer strip of a king is proper sleeping space, useful when a dog claims the middle.
This size suits you if...
You share the bed every night and the UK double has started to feel like a compromise, one of you is close to six foot and needs the 200cm length, or you keep different hours and want enough width that the early riser can slip out without disturbing the other. It also suits couples whose dog or child regularly joins them and takes more than a fair share.
Consider another size if...
Your bedroom is smaller than the 2.7m x 2.9m we suggest, or you mostly sleep alone. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m and still gives a solo sleeper plenty of room.
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FAQ's
Is the Hypnos Clinton Cotton Deluxe in a UK king big enough for a couple?
Yes, comfortably for most. At 150 x 200cm you get 75cm each for two people sharing, which is enough width to change position freely rather than sleeping to a truce line. If one of you sprawls, or a pet joins you most nights, the UK super king adds another 30cm of width.
What room size do I need for the UK king Hypnos Clinton Cotton Deluxe?
We suggest at least 2.7m x 2.9m for a UK king, which leaves room to walk around both sides and open drawers. In a new build master bedroom, measure after accounting for wardrobes: the floor space on the plan often shrinks once fitted furniture goes in.
Is the UK king long enough for someone over six foot?
Usually, yes. The UK king is 200cm long, or 6ft 6in, which gives a six-footer roughly a hand's length of clearance at each end. That extra 10cm over the UK double is often the difference between comfortable and feet pressed against the footboard, so length alone can justify the upgrade.
Should I pick the UK king or the UK super king in this mattress?
The UK king is 30cm narrower than the UK super king, and the two are the same length, so the choice is purely about width and floor space. If your room meets the 3m x 2.9m we suggest for the UK super king and you value space over everything, size up. Otherwise the UK king serves most couples well.
Will a UK king reduce partner disturbance on this mattress?
It helps in two ways. The 1000 pocket springs move independently, so one person shifting doesn't ripple across the bed, and 75cm of width each means you're less likely to bump into one another in the first place. If your schedules differ by hours, that combination makes the early exit far less disruptive.