Firmness
Type
Pocket Spring
Depth (cm)
31
Number of Layers
5
Trial Period (nights)
Warranty (years)
10
Price Range
£5,999 to £7,999
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Feather & Black, captured September 2026, and from regular price comparison across our UK retail partners.
Everything in this mattress is natural, and the Soil Association certification means the organic claims are independently verified rather than just marketing. The natural latex layer relieves pressure without synthetic foams, while the hemp, flax and cotton blend wicks moisture away, which means a drier, cooler night if you tend to overheat. It's double-sided, so flipping it regularly should extend its useful life, a genuine point in its favour at this price. Feather & Black, the one retailer currently listing it, states a 10-year guarantee and free delivery, though it's sensible to confirm whether those are manufacturer or retailer terms before you buy. The price is steep, but the materials and craftsmanship go some way to justifying it.
Key Features & what's inside
- Sleep surface. An organic wool and cotton sleep surface that's naturally breathable. This is the layer you'll feel first, soft and temperature-regulating against your skin.
- Natural latex layer. Natural latex relieves pressure at your hips and shoulders, which means less tossing and turning. It does this without any synthetic foam.
- Moisture-wicking layer. A natural blanket of cotton, hemp and flax draws moisture away from you as you sleep. Helpful if you run warm at night.
- Pocket springs. Hypnos' ReActivePro 10-turn pocket springs respond individually to the shape of your body, encouraging natural spinal alignment. Each spring moves on its own, so your partner's movement is less likely to disturb you.
- Wool and silk blend. Layer upon layer of British lambswool blended with ethically farmed peace silk. These natural fillings add cushioning and help regulate temperature through the seasons.
Layer details from featherandblack.com product page, September 2026.
Who's it NOT for?
This is a firm mattress, so lightweight side sleepers may find it too unyielding at the shoulder and hip. It's also a serious investment at £5,999 upwards, and it's double-sided, so you'll need to be able to flip a substantial 31cm mattress regularly to get the best from it.
Hypnos Organics 6 Mattress
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Is the Hypnos Organics 6 mattress firm or soft?
It's described as firm. That suits back and front sleepers, and heavier builds generally, although lighter side sleepers may find it a little too solid for comfortable pressure relief at the shoulder.
Is the Hypnos Organics 6 really organic?
Yes, it's Soil Association certified organic, so the claim is independently verified. It's also stated to be free from harmful FR chemicals, pesticides and genetic modifications, with natural fillings including organic wool, organic cotton, hemp, flax and natural latex.
Does the Hypnos Organics 6 need to be flipped?
The Feather & Black listing describes it as double-sided and suitable for flipping. Regular flipping helps the fillings settle evenly, which should extend the mattress's life, though at 31cm deep it's a two-person job.
What guarantee comes with the Hypnos Organics 6?
Feather & Black, currently the only retailer listing it, states a 10-year guarantee along with free delivery. These terms appear on the retailer's page, so it's worth confirming with them whether they're manufacturer or retailer-specific before ordering.
What sizes does the Hypnos Organics 6 come in?
It's available in UK Single, Double, King and Super King, priced from £5,999 to £7,999 depending on size.
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