Arthur Sleep Ice Arthur King Size Mattress
The Ice Arthur from Arthur Sleep is a pocket spring mattress, which means individual springs move independently and respond to your body rather than the bed as a whole.
- Cooling technology for warm nights
- Medium feel suits many sleepers
- Memory foam that contours to you
£879.75
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Arthur Sleep Ice Arthur Mattress
More available sizes
Mattress details
Mattress
Arthur Sleep Ice Arthur Mattress
Size
Firmness
Medium
Construction
Pocket Spring
Depth (cm)
Layers
2
Layer Details
Comfort layer
Gel foam sits over 40mm of memory foam. The memory foam contours to your shape, and the gel foam is part of the cooling technology, which should help the surface feel less warm.
Support system
3,000 pocket springs, made up of 1,000 standard springs and 2,000 mini springs. Each spring sits in its own pocket, so the base supports your body in a more tailored way beneath the foam.
Layer details from mattressman.co.uk and arthursleep.co.uk product pages, October 2026.
Key benefits
- Real personal space for two: At 75cm of width each, both of you can turn over or starfish slightly without a negotiation, which a double rarely allows.
- Less disturbance from a restless partner: Pocket springs respond to the body pressing on them rather than the whole bed, so an early alarm on one side is less likely to wake the other.
- Extra length for taller sleepers: The UK king is 10cm longer than the UK double at 200cm, which anyone approaching 6ft will feel at their feet every night.
- A sensible footprint for most main bedrooms: We suggest a room of at least 2.7m x 2.9m, achievable in many UK master bedrooms without giving up wardrobe space.
- Easy shopping in imperial or metric: That's 5ft x 6ft 6in in old money, and standard UK king sheets and a king duvet fit without hunting for odd sizes.
This size suits you if...
You share the bed every night and have outgrown a double, especially if you and your partner keep different hours and want movement on one side to stay on that side. It also fits if one of you is tall and keeps finding feet hanging off the end, or if a dog has quietly claimed a strip of the mattress and you'd like your share back.
Consider another size if...
Your bedroom falls short of the 2.7m x 2.9m we suggest for a UK king. In that case we'd recommend the UK double instead, which needs at least 2.6m x 2.8m and gives up 15cm of width.
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FAQ's
Is the Ice Arthur in a UK king big enough for a couple?
Yes, for most couples it's the comfortable choice. Two people sharing get 75cm of width each, and the 200cm length suits taller sleepers. The pocket spring construction also helps here: springs move independently, so one person shifting or getting up early disturbs the other less than on a bed that moves as a whole.
What room size do I need for the Ice Arthur king?
We suggest at least 2.7m x 2.9m for a UK king, which leaves room to walk round the bed and open drawers. That's our guidance rather than the manufacturer's. Measure with wardrobes and bedside tables in place, as new build master bedrooms in particular can feel smaller once furniture goes in.
Should I choose the Ice Arthur in a UK king or a UK super king?
The UK super king is 30cm wider than the UK king, and both are the same length, so the decision comes down to width and room size. We suggest at least 3m x 2.9m for the UK super king. If your room can't spare that, the UK king still gives a couple a comfortable 75cm each.
Will the extra length of the king help a tall sleeper?
It's often the main reason to size up. The UK king is 10cm longer than the UK double as well as 15cm wider, taking the length to 200cm. If one of you is over six foot and currently sleeping diagonally or with feet over the edge, that added length matters more than the width.
Where can I buy the Ice Arthur mattress in a UK king?
Availability shifts, so the most reliable answer is the live comparison table on this page, where prices are updated as retailers change them. Stock for this model is limited, so if the UK king shows as available at a price that suits you, it's sensible to check the retailer's listing promptly.