Hypnos Winslow Luxury Wool 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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Inside the Hypnos Winslow Luxury Wool's 29cm depth you get eight fleeces of wool over 1,200 ReActivePro 6-turn pocket springs, which means the surface adapts to your shape while the wool helps keep your temperature steady through the night. Hypnos holds a Royal Warrant and the mattress conforms to BS7177 for home use. It's a serious spend, although the natural materials and 10-year guarantee go some way to justifying it.
Mattress specifications
Firmness
Medium Firm
Type
Pocket Spring
Depth (cm)
29
Number of Layers
3
Trial Period (nights)
100
Warranty (years)
10
Price Range
£1,349 to £2,719
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Combination Sleeping
Certifications
BS 7177
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
If you sleep warm, this is the standout reason to shortlist the Winslow. The eight wool fleeces regulate body temperature, which means fewer sweaty wake-ups than you would get from a synthetic foam surface, and the wool is traced back to its origins through Hypnos' partnership with Red Tractor. The 1,200 pocket springs respond to each sleeper individually, so a restless partner is less likely to disturb you, and Triple Edge Protection adds three rows of firmer springs plus rod edging around the perimeter, which means you can sit or sleep right at the edge without it sagging. Sizes run from UK Single up to Emperor, with EU sizes available too.
Key features & 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.
Best suited for?
Warm sleepers
Eight fleeces of wool regulate body temperature through the night, which means fewer sweaty wake-ups than a synthetic foam surface would give you.
Couples
The 1,200 pocket springs respond to each sleeper individually, so a restless partner is less likely to disturb you during the night.
Eco-conscious buyers
The wool is sustainably sourced and traceable to its origins through Hypnos' partnership with Red Tractor, and the cotton cover is a natural material too.
Back sleepers
A medium firm feel over 1,200 pocket springs gives steady support that responds to your weight and position, so your body stays well supported.
European bed frames
EU sizes are available alongside UK Single up to Emperor, which means you can match the mattress to a continental frame without compromise.
If you love the slow, cradling sink of memory foam, this traditional pocket spring feel will seem too springy. Lightweight side sleepers may also find the medium to firm tension a little unyielding on hips and shoulders. And if natural wool smells bother you, one owner did report a lingering animal scent.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Hypnos Winslow Luxury Wool Mattress
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FAQ's
Is the Hypnos Winslow Luxury Wool mattress firm or soft?
Hypnos rates it medium to firm, so it offers solid support with a softer cotton and wool surface. It suits most back and combination sleepers, although lightweight side sleepers may find it slightly too firm for comfortable pressure relief at the shoulders.
Does the Hypnos Winslow come with a trial period?
Mattress Online lists a 100-night trial on this mattress, with an exchange available after 30 nights if you're unsatisfied. The trial requires buying a mattress protector from MattressOnline, and these are the retailer's own terms, so check conditions wherever you buy.
How long is the guarantee on the Hypnos Winslow mattress?
Mattress Online lists a 10-year guarantee on this mattress. That is a reassuring span for a natural-fill pocket spring bed, though as it appears on a retailer listing rather than the brand's own site, confirm the guarantee terms with your chosen seller before ordering.
Is the Hypnos Winslow good for hot sleepers?
Yes, temperature regulation is its strongest suit. The eight wool fleeces and cotton sleep surface breathe far better than synthetic foams, and owner reviews mention reduced overheating compared with previous mattresses. If you regularly wake up too warm, this design directly addresses that.
What sizes does the Hypnos Winslow Luxury Wool come in?
It comes in UK Single, Small Double, Double, King, Super King and Emperor, plus EU Double and EU King. The mattress is 29cm deep.
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