Hypnos Imperial Ortho Supreme Mattress
Mattress
Hypnos Imperial Ortho Supreme Mattress
Size
Firmness
Construction
Depth (cm)
28
Layers
5
Layer Details
- Cover. An unbleached cotton cover that achieves fire resistance without FR chemicals, which means a cleaner, fresher sleep surface. It feels natural rather than synthetic against your bedding.
- eOlus™ Fibres. Resilient eOlus fibres sit just beneath the cover, offering body support while letting air and moisture pass through easily. In practice, that means less heat building up around you overnight.
- RWS Certified British Wool. Layers of British wool, certified by the Responsible Wool Standard, cushion your whole body so you dip into the surface just the right amount. Wool also insulates naturally, keeping you warmer in winter.
- Sustainably Sourced Cotton. Responsibly sourced cotton wicks away excess moisture, which means the surface stays feeling fresh through the night. It works alongside the wool to regulate temperature all year round.
- ReActive™ 7-Turn Pocket Springs. A support unit of ReActive 7-turn pocket springs, each moving independently to align your spine as you change position. That translates to targeted support at your hips and shoulders rather than a one-feel-fits-all base.
Layer details from mattressnextday.co.uk product page, September 2026.
- 90cm each for two sharing: With 90cm each for two people sharing, the ReActive 7-turn pocket springs respond only where you lie, so a restless partner barely registers.
- Room for the whole household: When children wander in during the small hours, or a large dog treats the bed as its own, 180cm of width means nobody ends up perched on the edge.
- Firm support across a wide surface: The firm feel stays consistent edge to edge, so a heavier sleeper on one side and a lighter sleeper on the other each get proper spinal alignment.
- Natural fillings suit a shared bed: Two bodies generate more heat than one, and the wool and cotton fillings breathe far better than foam across a bed this size.
- A bed that fits a big master: In a period property or generous new build master, a UK king can look a little lost; the UK super king at 6ft x 6ft 6in fills the space properly.
This size suits you if...
You share every night and want distance from a partner who turns, kicks or gets up early, or your bedroom is large enough that a smaller bed would look undersized. It also suits families whose children or pets regularly join in the night, and couples of different weights who both need firm, independent support. Allow at least 3m x 2.9m of floor space.
Consider another size if...
Your room falls short of the 3m x 2.9m we suggest, or your landing and door swing make a 180cm-wide mattress a struggle. We'd recommend the UK king instead: it's 30cm narrower, the same length, and needs at least 2.7m x 2.9m.
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 a super king too big for a couple who sleep close together?
Not too big, but it may be more than you need. The point of the UK super king is separation: 90cm each for two people sharing, which mainly rewards restless pairs or households with children and pets joining in. If you naturally sleep in the middle third of the bed, the UK king does the same job in less floor space.
What room size do I need for the Hypnos Imperial Ortho Supreme super king?
We suggest at least 3m x 2.9m, with around 3.5m x 3.2m feeling more comfortable once you add bedside tables on both sides and a wardrobe. This is our guidance rather than the manufacturer's. Measure the walkway around the bed too: a firm 28cm-deep mattress on a divan sits fairly high, so you want space to move around it.
Will the super king version of this mattress get up my stairs?
It needs more thought than smaller sizes. At 180 x 200cm this is a single-piece pocket sprung mattress, and it cannot be rolled or folded the way foam can. Measure your stairwell, landing turns and bedroom door swing before ordering. If access is tight, ask the brand about zip and link options, since two halves travel far more easily.
Is the Hypnos Imperial Ortho Supreme super king good for sharing with kids or dogs?
It's one of the better setups for it. The width means a child climbing in at 3am doesn't cost either adult their share of the bed, and the firm ReActive pocket springs keep movement localised, so the wriggling stays on their side. The wool and cotton fillings also cope well with the extra body heat that comes with a full bed.
How does the UK super king compare with the UK king for this mattress?
The UK super king is 30cm wider than the UK king, and the two are the same length. That extra width is what buys you 90cm each for two people sharing. The trade-off is space and logistics: the UK king needs at least 2.7m x 2.9m by our guidance, while the UK super king wants 3m x 2.9m and a clearer route upstairs.