Hypnos Purity Luxury Wool Mattress
Mattress
Hypnos Purity Luxury Wool Mattress
Size
Firmness
Construction
Depth (cm)
26
Layers
5
Layer Details
- Cover. A damask cover made from breathable Belgian damask fabric. It lets air pass through rather than trapping heat at the surface.
- Solotex™ cushioning. Layers of soft Solotex™ cushioning gently cradle the body, which means pressure relief at your hips and shoulders. This is the plush feel you'll notice first.
- Wool and cotton fillings. Sumptuous wool fleeces from British sheep on Red Tractor assured farms work alongside responsibly sourced cotton. Together they regulate temperature and wick away moisture, a genuine help for hot sleepers.
- eOlus™ comfort pad. An eOlus™ recycled fibre pad enhances resilience and airflow. It helps the comfort layers keep their shape over time.
- ReActivePro™ pocket springs. An 8-turn pocket spring system with Triple Edge Protection™, engineered to respond independently to body movements. In practice that means adaptive support tailored to your shape and a firmer, more usable edge.
Layer details from mattressnextday.co.uk product page, September 2026.
- 75cm each, every night: Two people sharing get 75cm each, so you can turn over without negotiating for territory.
- Movement stays on their side: The ReActivePro™ 8-turn pocket springs respond independently, which means an early riser slipping out at 5am is far less likely to wake the person still sleeping.
- Length for taller sleepers: At 200cm, the UK king is 10cm longer than the UK double, so a six-footer's feet stop meeting the end of the bed.
- Wool works harder across a bigger surface: Two bodies generate more heat than one, and the British wool fillings wick moisture and regulate temperature across the full width.
- A usable edge on both sides: Triple Edge Protection™ keeps the perimeter supportive, useful when each of you sleeps nearer your own edge in a shared king.
This size suits you if...
You share the bed every night and have outgrown a UK double, one of you is around six foot and keeps finding the end of the bed, or your schedules don't match and you need the person getting up early to leave without waking the other. It also makes sense if a dog has made itself a permanent third occupant and a double no longer stretches to everyone.
Consider another size if...
Your bedroom is smaller than the 2.7m x 2.9m we suggest for a UK king, or you mostly sleep alone. We'd recommend the UK double instead, allowing at least 2.6m x 2.8m of floor space.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
Is the Hypnos Purity Luxury Wool in a UK king big enough for a couple?
Yes, comfortably for most. At 150cm wide it gives two people sharing 75cm each, enough to change position without disturbing each other, and the pocket springs respond independently so movement on one side stays there. If one of you sprawls, or a dog shares the bed most nights, the UK super king adds another 30cm of width.
How much bigger is a UK king than a double for this mattress?
The UK king is 15cm wider and 10cm longer than the UK double. The width is what you feel night to night as a couple; the length matters if either of you is tall, since the UK double stops at 190cm. Given the Hypnos Purity is a long-term buy with a 10-year guarantee, most couples find the step up worthwhile.
What room size do I need for the Hypnos Purity in a UK king?
We suggest a bedroom of at least 2.7m x 2.9m, with 3.2m x 3.2m feeling genuinely comfortable. Measure with wardrobes and drawers in place rather than the empty floor plan, because a new build master bedroom can shrink surprisingly once furniture goes in. If you're under that minimum, the UK double needs a slightly smaller 2.6m x 2.8m.
Is the UK king long enough for someone over six foot?
At 200cm, it should be. That's 10cm more than the UK double or UK single, and for a sleeper around the 6ft mark it's often the difference between feet on the mattress and feet hanging off it. The UK super king is the same 200cm length, so sizing up beyond a UK king buys width, never extra length.
Will the Hypnos Purity UK king fit up my stairs?
It's worth measuring before you order. Hypnos delivers this mattress flat rather than rolled and boxed, so a 150 x 200cm mattress has to make it round your landings and through doorways as one piece. Check the tightest turn on the route to your bedroom; a UK king will flex a little, but it won't fold.