Firmness
Medium Firm
Type
Hybrid
Depth (cm)
33
Number of Layers
3
Trial Period (nights)
100
Warranty (years)
10
Price Range
£2,179 to £3,729
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
This mattress makes most sense if you want natural materials rather than synthetic foams. Wool helps regulate temperature, which means it should suit you if you tend to sleep warm, and the natural latex adds a responsive bounce back, so you won't feel stuck when changing position. The 1800 pocket springs are dual heat treated to keep their full height for longer, which should help the mattress hold its shape over the years. A medium feel suits most sleepers, although if you specifically want a firm surface this may feel a little too forgiving. Mattress Online lists a 10 year guarantee and a 100-night trial, though the trial requires buying a mattress protector from them.
Key Features & what's inside
- Comfort layer. A blend of seven British wool fleeces makes up the plush comfort layer. Wool is naturally breathable, which means it helps keep your temperature steady through the night.
- Latex layer. A generous layer of sustainably sourced natural latex sits on either side of the spring unit. It adds a responsive bounce back, so the mattress recovers quickly as you move.
- Support system. 1800 ReActivePro 10-turn pocket springs form the support core, with each spring moving independently to follow your shape. Every extra deep pocket spring is dual heat treated to keep its full height for longer.
Layer details from mattressonline.co.uk product page, September 2026.
Who's it NOT for?
If you're on a tight budget, this isn't the mattress for you: it starts at £2,179.00. Fans of a properly firm surface may find the medium feel slightly soft, and if you prefer the slow, sinking hug of memory foam, the springy latex and wool combination will feel quite different.
Hypnos Wheatley Supreme Wool Mattress
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How firm is the Hypnos Wheatley Supreme Wool mattress?
The product page describes it as medium. That suits most sleepers, including side sleepers who need a little give at the shoulder and hip, although lightweight sleepers may find it firmer than expected and dedicated firm-mattress fans may want more resistance.
Does the Hypnos Wheatley Supreme Wool come with a trial?
Mattress Online lists a 100-night trial with this mattress. It's the retailer's own offer rather than a Hypnos policy, and it requires you to buy a mattress protector from Mattress Online to be eligible, so factor that into the price.
What is the Hypnos Wheatley Supreme Wool made of?
The comfort layer blends seven British wool fleeces, with natural latex either side of a unit of 1800 pocket springs, all wrapped in a cotton viscose cover. The wool is Red Tractor certified, which means its origins are traceable back to British farms.
What sizes does the Hypnos Wheatley Supreme Wool come in?
It's available in UK Small Double, Double, King, Super King and Emperor, plus EU Double and EU King. Prices range from £2,179 to £3,729 depending on the size you choose.
Is there a guarantee on the Hypnos Wheatley Supreme Wool?
Mattress Online lists a 10 year guarantee with this mattress. As that figure comes from the retailer's listing, it's sensible to confirm the guarantee terms with whichever retailer you buy from before ordering.
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