Hypnos Majesty Ortho Sublime Mattress
Mattress
Hypnos Majesty Ortho Sublime Mattress
Size
Firmness
Construction
Depth (cm)
30
Layers
5
Layer Details
- Cover. An unbleached, chemical-free cotton cover in Belgian damask, which means a soft, breathable sleeping surface without harsh treatments. Damask is a tightly woven fabric that wears well over time.
- Comfort fillings: British wool. Insulating British wool cushions the whole body, which means gentle pressure relief rather than the sink-in feel of memory foam. Wool also helps keep the surface temperate.
- Comfort fillings: cotton. Cotton wicks away excess moisture and works alongside the wool to regulate temperature. In practice, that means a drier, more comfortable feel in both summer and winter.
- Comfort fillings: Solotex and eOlus fibres. Recycled Solotex and eOlus fibres add to the cushioning while promoting airflow. That extra breathability matters most if you tend to overheat at night.
- Support system: ReActive pocket springs. A core of ReActive 8-turn pocket springs supports key areas of the body. Each turn lets the spring react faster to your movements, which means the mattress adjusts as you change position rather than lagging behind.
Layer details from mattressnextday.co.uk product page, September 2026.
- Fits compact rooms: At 90cm wide, it leaves floor space free in box rooms and lofts, and we suggest just 2.1m x 2.8m of room to work with.
- Firm support for growing sleepers: The firm ReActive 8-turn pocket springs suit teenagers moving up from a childhood bed, offering proper spinal support through years of growth.
- Natural fillings in a small space: RWS certified British wool and moisture-wicking cotton help a small, warm bedroom sleep cooler than a foam single would.
- Easier to move than larger sizes: It arrives flat rather than rolled, and the UK single is the easiest size to carry up narrow stairs or into a loft conversion.
- Cheap, easy bedding: Standard single sheets and a 135 x 200cm duvet fit, the most widely stocked and affordable bedding of any UK size.
This size suits you if...
You sleep alone and want a firm, naturally filled mattress in the smallest standard footprint, you're upgrading a teenager to a bed that will last them into adulthood, or you're furnishing a guest room or spare-room office where a slim bed has to share space with a desk and storage.
Consider another size if...
You share the bed, or you're an adult who likes room to spread out. We'd recommend the UK small double instead: it's 30cm wider, the same length, and we suggest at least 2.4m x 2.8m of floor space for it.
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What size is the Hypnos Majesty Ortho Sublime UK single?
It measures 90 x 190cm, which is 3ft x 6ft 3in. That's the standard UK one-person size, so it fits any regular single bed frame, and standard single sheets and a 135 x 200cm duvet will fit without any hunting for unusual bedding.
Will the UK single fit a bunk or mid sleeper frame?
The width matches standard bunk and mid sleeper frames, but this mattress is 30cm deep, which is deeper than many raised frames allow. Check the maximum mattress depth and guard rail height on your frame before buying, particularly for a child's top bunk where the rail needs to sit well above the mattress surface.
How much floor space does a UK single mattress need?
We suggest allowing at least 2.1m x 2.8m, which gives you room to walk around the bed and open drawers or a wardrobe. That makes the UK single a sensible fit for a child's room shared with toy storage and a desk, or a loft conversion where the bed sits under the slope.
Is the Hypnos Majesty Ortho Sublime UK single suitable for a teenager?
Yes, with one caveat. The firm feel and responsive pocket springs give good support for a growing back, and the natural fillings breathe well in a small, warm room. It's a big spend for a teenager's bed, but it should comfortably outlast the years between childhood and leaving home.
Should I choose the UK single or the UK small double?
The UK single is 30cm narrower than the UK small double, and the two are the same length. If you sleep alone in a compact room, the UK single is the practical choice. If you're a restless sleeper or simply like space, the UK small double suits you better, provided you can allow at least 2.4m x 2.8m for it.