Hypnos Ultimate Ortho Mattress
Mattress
Hypnos Ultimate Ortho Mattress
Size
Firmness
Construction
Depth (cm)
26
Layers
3
Layer Details
- Cover. A 100% viscose, chemical-free cover that feels silky against the skin. It's breathable too, which helps air move away from your body overnight.
- Comfort fillings. Natural cotton is combined with Solotex, a recycled fibre. The cotton regulates temperature while the Solotex adds resilience, so the comfort layer keeps its shape rather than flattening quickly.
- Support system. Hypnos's ReActive 6-turn pocket spring system, engineered for total spinal and body support. Each spring works independently, sensing your comfort and support requirements, which means less roll-together and more even pressure relief.
Layer details from mattressnextday.co.uk product page, September 2026.
- 75cm each for two sharing: Each of you gets 75cm of width, which means you can settle into your own space rather than negotiating for it on a very firm surface.
- Less disturbance on different schedules: The ReActive 6-turn pocket springs respond individually, so an early riser slipping out at six is less likely to wake the partner staying put.
- Extra length for taller sleepers: At 200cm, the UK king is 10cm longer than the UK double, a genuine relief if one of you is approaching six foot.
- A firm feel that spreads well: Extra firm support across a 150cm width means back and front sleepers can stretch out without drifting towards a shared dip in the middle.
- Fits most main bedrooms: We suggest a room of at least 2.7m x 2.9m, which most UK master bedrooms can manage with bedside tables on both sides.
This size suits you if...
You share the bed every night and a UK double has started to feel cramped, especially with one of you preferring a very solid, extra firm feel that rewards space to lie flat. It also suits couples on mismatched schedules, since the independent pocket springs and the extra width between you both cut down on disturbance, and anyone tall enough to appreciate the 200cm length.
Consider another size if...
Your bedroom is under our suggested 2.7m x 2.9m minimum, or you sleep alone. For a smaller room we'd recommend the UK double, allowing at least 2.6m x 2.8m; solo sleepers may find the UK single ample.
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Is a UK king Hypnos Ultimate Ortho big enough for a couple?
Yes, for most couples it's the comfortable choice. At 150cm wide you get 75cm each for two people sharing, and because the ReActive pocket springs work independently across that width, you feel less of your partner's movement. Lightweight side sleepers should still think carefully about the extra firm feel, though, whatever the size.
How big is the Hypnos Ultimate Ortho in a UK king?
This size measures 150 x 200cm, or 5ft x 6ft 6in. The mattress itself is 26cm deep in every size, so it's the footprint that changes here, and the 200cm length is 10cm more than the UK double, useful for anyone tall.
What room size do I need for the UK king Ultimate Ortho?
We suggest a room of at least 2.7m x 2.9m for a UK king, with 3.2m x 3.2m feeling comfortable. That allows walking space on both sides and room for bedside tables. If your room falls short, the UK double needs at least 2.6m x 2.8m and gives up only 15cm of width.
Will a UK king reduce partner disturbance on a firm mattress?
It helps noticeably. Extra firm mattresses can transmit movement more than softer ones, but the 6-turn pocket springs respond to each sleeper separately, and the 150cm width puts real distance between you. If one of you leaves for work hours before the other, that combination makes the early exit far less intrusive.
Should I choose the UK king or UK super king Ultimate Ortho?
The UK super king is 30cm wider than the UK king, with the same 200cm length, and we suggest at least 3m x 2.9m of room for it. If a dog routinely claims a corner of the bed, or you both spread out, the extra width helps. For most couples the UK king is the sensible balance.