Hypnos Cotton Origins 7 King Size Mattress
The Hypnos Cotton Origins 7 is a pocket spring mattress with 1,200 pocket springs, which means each spring moves independently to follow the shape of your body rather than pushing back as one unit.
- Moulds to you as you move
- Minimises partner disturbance
- From a heritage British maker
£1,274.15
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Hypnos Cotton Origins 7 Mattress
More available sizes
Mattress details
Mattress
Hypnos Cotton Origins 7 Mattress
Size
Firmness
Medium
Construction
Pocket Spring
Depth (cm)
Layers
Layer Details
Pocket Springs
1,200 pocket springs form the core of the mattress, and the body-moulding nature of the spring system means the surface adapts to your shape as you move. Each spring works independently, so support goes where your body needs it.
Layer details from mattressman.co.uk product page, September 2026.
Key benefits
- Room to sleep apart, together: At 75cm each for two people sharing, you can both spread out properly, which matters most in the small hours when someone starts fidgeting.
- Springs that keep movement local: Each of the 1,200 pocket springs compresses independently, so a partner turning over or leaving early creates less ripple across the mattress.
- Length for taller sleepers: The UK king is 10cm longer than the UK double at 200cm, a genuine relief if one of you is nudging six foot.
- 15cm wider than a UK double: That extra width sounds modest on paper but you feel it nightly, particularly if a dog has made the foot of the bed its own.
- Fits a normal master bedroom: We suggest a room of at least 2.7m x 2.9m, which most UK master bedrooms can manage where a UK super king would struggle.
This size suits you if...
You share the bed every night and a double has started to feel like a compromise, especially if one of you keeps different hours and the other feels every exit. It also suits you if one partner is approaching six foot and needs the 200cm length, or if a pet routinely claims a share of the mattress and you'd rather add space than argue.
Consider another size if...
Your bedroom falls short of our suggested 2.7m x 2.9m minimum, or you sleep alone. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m and still offers the same spring system.
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FAQ's
Is the Hypnos Cotton Origins 7 UK king good for couples?
Yes, and it's arguably the size this mattress makes most sense in. Two people sharing get 75cm each, and the 1,200 pocket springs move independently, so one person shifting or getting up early disturbs the other less. If you're currently on a double and waking each other, the UK king is the sensible fix.
What room size do I need for the Cotton Origins 7 in a UK king?
We suggest at least 2.7m x 2.9m, and that's our guidance rather than a Hypnos figure. New build masters can be tighter than they look once fitted wardrobes go in, so measure the free floor space, and remember to allow walking room and space for bedside tables on both sides.
Is the UK king Cotton Origins 7 long enough for tall sleepers?
At 200cm long, or 6ft 6in, it gives taller sleepers 10cm more than a UK double. For anyone around the six foot mark, that length is often the real reason to size up, since feet no longer hang off the end. The UK super king is the same length, so going wider adds nothing here.
Should I choose the UK king or UK super king in this mattress?
The UK super king is 30cm wider, the two are the same length, and we suggest at least 3m x 2.9m of room for it. If your bedroom comfortably clears that and you want maximum space, size up. For most couples, the UK king offers plenty of width without dominating the room.
Where can I compare prices on the Hypnos Cotton Origins 7 UK king?
The prices shown on this page are pulled from retailer listings and updated as retailers change them, so the table here is the quickest way to compare what the UK king currently costs. Retailer extras such as trials and delivery vary by seller, so check each listing's terms rather than assuming they match.