Harrison Spinks Conrad Super King Mattress
The Harrison Spinks Conrad is a natural-filled pocket spring mattress with 10,590 springs and a 29cm depth.
- Warm in winter, breathable in summer
- Minimises partner disturbance
- Recycled, zero-waste spring system
£2,579
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Harrison Spinks Conrad Mattress
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Mattress details
Mattress
Harrison Spinks Conrad Mattress
Size
Firmness
Construction
Foam
Pocket Spring
Wool
Orthopaedic
Natural
Depth (cm)
29
Layers
5
Layer Details
Mohair
Soft mohair sits near the sleep surface, which means a luxurious feel underneath you. It also helps regulate temperature through the night.
Wool
Naturally insulating British wool keeps you warm in winter. It's a traditional filling for good reason.
Cotton
Breathable cotton draws heat away in summer. Paired with the wool, it means the mattress adapts across the seasons rather than trapping warmth.
Hemp and Flax
Hemp and flax add further natural loft alongside the mohair, cotton and wool. These plant fibres round out an entirely natural filling stack.
Pocket Springs
10,590 responsive springs form the support core, combining high-density micro, Posturfil and Cortec pocket springs. Each spring moves independently, which means support that follows your shape and less disturbance from a restless partner.
Layer details from featherandblack.com product page, September 2026.
Key benefits
- 90cm each for two sharing: Each of you gets 90cm of width, which means the 10,590 independent pocket springs have real distance to work with when one of you turns over.
- Room for night-time visitors: When a child pads in at 3am, or the dog treats the bed as theirs, everyone still keeps a workable share of the 180cm width.
- Fills a large master properly: In a period property or generous new build master, a UK king can look lost against the wall; the UK super king sits in proportion.
- Natural fillings across a bigger surface: The mohair, wool, cotton, hemp and flax layers regulate temperature naturally, and two sleepers spaced this far apart share less body heat in the first place.
- Firm support, spread wide: The listed Firm tension paired with this much space suits heavier couples who want solid support without feeling every movement from the other side.
This size suits you if...
You share the bed every night and want enough distance that a restless partner stops registering, or children and pets join you regularly and a UK king has started to feel crowded. Your bedroom comfortably clears our suggested minimum of 3m x 2.9m, and ideally more, so the bed can breathe rather than dominate.
Consider another size if...
Your bedroom falls short of the 3m x 2.9m we suggest for the UK super king, or you'd struggle to get a mattress this size up the stairs. The UK king is 30cm narrower and the same length, and we suggest at least 2.7m x 2.9m for it.
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FAQ's
What room size do I need for the Conrad in a super king?
We suggest at least 3m x 2.9m for a UK super king, and that's our guidance rather than the manufacturer's. That allows walking space on both sides and room for bedside tables. If your room is tighter than that, the UK king needs at least 2.7m x 2.9m and gives up 30cm of width, nothing in length.
Is the super king Conrad worth it over the UK king?
If you share with a partner, children or a large dog, the extra 30cm of width is the difference between negotiating space and forgetting the other side of the bed exists. The UK super king and the UK king are the same length, so it's purely a width decision, and a room decision.
Will the Harrison Spinks Conrad super king get up my stairs?
At 180 x 200cm and 29cm deep, with a spring core rather than foam, this mattress won't fold or squash round corners. Check your door swings, landing turns and stairwell width before ordering. If access looks tight, the UK king is 30cm narrower, which is often enough to make an awkward turn manageable.
How much space does each person get on a super king Conrad?
90cm each for two people sharing. Combined with the 10,590 pocket springs, which move independently rather than as one unit, that distance means a partner shifting position in the night is far less likely to wake you. It's the pairing of width and spring isolation that does the work.
Where can I buy the Conrad in a UK super king?
Compare the retailers listed on this page; the prices shown here are updated as retailers change them, so what you see reflects current availability rather than a snapshot. Do check which tension the listing carries, since the version we sourced is the Firm and Soft, Medium and Ortho Extra Firm are also made.