Hypnos Winslow Luxury Wool Single Mattress
The Hypnos Winslow Luxury Wool is a pocket spring mattress with natural fillings, rated medium to firm, so it suits sleepers who like a supportive feel with a softer surface layer.
- Eight wool fleeces keep you cooler
- Minimises partner disturbance
- Sit or sleep at the edge
£1,349
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Hypnos Winslow Luxury Wool Mattress
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Mattress details
Mattress
Hypnos Winslow Luxury Wool Mattress
Size
Firmness
Medium Firm
Construction
Pocket Spring
Wool
Natural
Depth (cm)
29
Layers
3
Layer Details
Sleep surface
A soft cotton sleep surface sits at the top. Cotton is naturally breathable, which means the layer closest to your skin stays comfortable rather than clammy.
Wool fillings
Beneath the cotton sit eight fleeces of wool that regulate body temperature through the night, so you feel warm in winter and cooler in summer. The wool is sustainably sourced and traceable to its origins through Hypnos' partner Red Tractor.
Support system
The base is 1,200 ReActivePro 6-turn pocket springs, which respond to your weight and position to relieve built-up pressure. Triple Edge Protection adds three rows of firmer springs and rod edging around the spring unit, which means a firmer, more usable edge.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- Fits where space is tight: At 3ft x 6ft 3in, this size leaves floor room for a desk, wardrobe and toy storage in even a small child's bedroom.
- Wool that suits warm sleepers of any age: Eight wool fleeces steady body temperature through the night, which means a teenager who kicks the duvet off will wake less often.
- A usable edge on a narrow bed: Triple Edge Protection adds firmer perimeter springs and rod edging, so a 90cm-wide sleep surface feels wider because you can lie right to the side.
- Medium firm support for growing bodies: The 1,200 ReActivePro pocket springs respond to individual weight, which means proper spinal support for a lighter child as well as an adult guest.
- Cheap, easy bedding: Standard single sheets and a single duvet fit, and they are the most widely stocked bedding of any UK size.
This size suits you if...
You're buying for a child or teenager and want natural materials rather than synthetic foam next to their skin, you sleep alone and your room only takes a 90cm-wide bed, or you're furnishing a spare room that doubles as an office and need the smallest full-length mattress that still gives adult guests real support.
Consider another size if...
You're an adult who sleeps diagonally or shares the bed even occasionally, because 90cm is snug for one and impossible for two. We'd recommend the UK double instead, which is 45cm wider, the same length, and needs a room of at least 2.6m x 2.8m.
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FAQ's
What size is the Hypnos Winslow Luxury Wool single mattress?
The UK single measures 90 x 190cm, which is 3ft x 6ft 3in. That is the standard one-person size in the UK, the same length as the UK small double and UK double but the narrowest of the standard adult sizes. Standard single sheets and a single duvet fit without adjustment.
Will the Hypnos Winslow single fit a bunk bed or mid sleeper?
The 90 x 190cm footprint matches standard UK bunk and mid-sleeper frames, but the depth needs checking first. This mattress is 29cm deep, which is taller than many bunk frames allow: guard rails must sit well above the mattress surface to be safe. Measure your frame's maximum mattress depth before buying, and check the frame maker's guidance.
Is the Hypnos Winslow single suitable for a child?
Yes, with one caveat. The medium firm tension and responsive pocket springs give good spinal support for a growing child or teenager, and the wool surface suits kids who sleep warm. It's a lot of mattress for a small person though, so it makes most sense if you want it to last well into the teenage years.
What room size do I need for a Hypnos Winslow single?
We suggest allowing at least 2.1m x 2.8m of floor space, which is our own guidance rather than the manufacturer's. That leaves room to walk alongside the bed and open drawers or a wardrobe. In a loft conversion or box room, the 90cm width is often the only standard size that fits under a slope or along a narrow wall.
Is the Hypnos Winslow single big enough for an adult?
For one adult sleeping alone, yes. At 90cm wide it's the standard UK one-person size, and the firmer edge springs mean you can use the full width without rolling off. Restless sleepers or anyone used to spreading out will find it a little confining, and for them the UK small double, 30cm wider and the same length, is a better fit.