Hypnos Organics 3 Mattress
Mattress
Hypnos Organics 3 Mattress
Size
Firmness
Construction
Depth (cm)
31
Layers
3
Layer Details
- Sleep surface. An organic wool and cotton breathable sleep surface, which means a naturally temperature-regulating feel against you rather than a synthetic cover. It's finished with three rows of genuine hand-sewn side-stitching for edge-to-edge border support.
- Comfort layers. Five fleeces of organic British lambswool sit alongside two layers of natural latex and Adaptiv comfort springs. The wool wicks moisture and the latex adds gentle, responsive cushioning above the main springs.
- Support. ReActivePro 7-turn pocket springs respond to the shape of your body, encouraging natural spinal alignment. Because each spring moves independently, you're less likely to feel a partner shifting during the night.
Layer details from featherandblack.com product page, September 2026.
- Room to sleep apart, together: At 75cm each for two people sharing, you can settle into your own space rather than negotiating the middle of the bed.
- Less disturbance on different schedules: ReActivePro 7-turn pocket springs move independently, so an early alarm on one side is far less likely to wake the person still sleeping.
- Length for taller sleepers: The UK king is 10cm longer than the UK double at 200cm, which matters more than width if one of you is over six foot.
- Usable right to the edge: Three rows of hand-sewn side-stitching support the border, so the full 150cm width is genuinely sleepable, even with a dog claiming the middle.
- Cooler across a bigger surface: Organic lambswool and natural latex breathe well, and the extra space means less shared body heat, a quiet advantage for warm sleepers.
This size suits you if...
You share the bed every night and a double has started to feel cramped, one of you gets up hours before the other and you want their movement to register as little as possible, or one partner is tall enough that the 200cm length is the real draw. It also suits couples who routinely share with a pet and need the extra width to absorb that.
Consider another size if...
Your room is under our suggested minimum of 2.7m x 2.9m, or you sleep alone. In either case we'd recommend the UK double instead, which is 15cm narrower and needs a room of at least 2.6m x 2.8m.
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Is a UK king Hypnos Organics 3 big enough for a couple?
Comfortably, for most. The UK king measures 150 x 200cm, giving 75cm each for two people sharing, and the hand-sewn side-stitching supports the edges so neither of you loses usable width to a soft border. If you want still more space and the room to match, the UK super king is 30cm wider.
Will the king size Hypnos Organics 3 fit in my bedroom?
We suggest a minimum room of 2.7m x 2.9m for a UK king, with 3.2m x 3.2m feeling comfortable, and that's our guidance rather than the manufacturer's. A new build master can be tighter than it looks once fitted wardrobes go in, so measure the clear floor space rather than the room dimensions.
Should a tall sleeper choose the UK king or UK super king?
If length is the concern, either works: the UK king and the UK super king are the same length at 200cm. The choice comes down to width and room size. The UK king suits most couples, while the UK super king adds 30cm of width but needs a room of at least 3m x 2.9m.
Does a bigger size reduce partner disturbance on this mattress?
It helps. The pocket springs move independently whatever the size, but the UK king's 75cm each for two people sharing means you're less likely to be lying near your partner's side when they get up. For couples on very different schedules, the width does as much as the springs.
Where can I buy the Hypnos Organics 3 in a UK king?
Stock and pricing shift regularly, so the most reliable answer is the live comparison table on this page, which is updated as retailers change their prices. You may see it listed as the Origins Organic No.3 at Feather & Black; it's the same mattress under a different name.