Arthur Sleep Copper Arthur Super King Mattress
The Copper Arthur from Arthur Sleep is a medium firm pocket spring mattress with a copper-infused fabric cover.
- Copper-infused cover
- Suits back & combination sleepers
- Supportive pocket spring core
£701.10
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Arthur Sleep Copper Arthur Mattress
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Mattress details
Mattress
Arthur Sleep Copper Arthur Mattress
Size
Firmness
Medium Firm
Construction
Pocket Spring
Depth (cm)
Layers
2
Layer Details
Comfort layer
A 40mm layer of memory foam. It adds a little cushioning over the springs, so the surface feels less bare than springs alone.
Support system
800 pocket springs, each working on its own. That gives the mattress its medium-firm support, and means the springs respond separately as you move or as a partner shifts.
Layer details from mattressman.co.uk and arthursleep.co.uk product pages, October 2026.
Key benefits
- Space and springs working together: Pocket springs limit motion transfer, and 90cm each adds physical distance on top, which means a restless partner disturbs you far less than in a smaller size.
- Room for night-time visitors: When a child pads in at 3am, or the dog treats the bed as home, 180cm of width means nobody ends up clinging to the edge.
- Medium firm across a wide surface: The medium firm feel suits back and combination sleepers, and at this width each of you gets consistent support without drifting into the other's dip.
- Copper-infused cover at full size: The copper-infused fabric cover covers the whole 180 x 200cm sleeping surface, so both sleepers get the same finish whichever side they take.
- Fills out a larger bedroom: In a big master or period room a UK king can look undersized, and the extra 30cm of width here sits far better in the space.
This size suits you if...
You share every night and want the most sleeping space a standard UK size offers, your partner is genuinely restless and distance matters as much as any comfort layer, or children and pets regularly join you and a UK king has started to feel crowded. Your bedroom should measure at least 3m x 2.9m, and closer to 3.5m x 3.2m will feel comfortable around it.
Consider another size if...
Your bedroom is smaller than the 3m x 2.9m we suggest, or you'd struggle to get a one-piece 180cm mattress up the stairs. We'd recommend the UK king instead, which is 30cm narrower, the same length, and needs at least 2.7m x 2.9m.
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FAQ's
Is the Copper Arthur super king big enough for a couple with kids climbing in?
It's the best size in the range for it. At 180 x 200cm you get 90cm each as a couple, so a child arriving in the night borrows space rather than taking yours. The pocket spring core also helps here, since the springs move independently and a small wriggler transmits less movement across the bed.
Will the Copper Arthur in a UK super king stop me feeling my partner move?
Nothing removes movement entirely, but this is the strongest setup Arthur Sleep offers for it. Pocket springs compress independently, so your partner's side moves without dragging yours, and 90cm of width each adds distance no comfort layer can match. If a restless sleeper is your main problem, size matters as much as construction.
What room size do I need for the Copper Arthur super king?
We suggest at least 3m x 2.9m, and around 3.5m x 3.2m feels right once you add bedside tables and walking space. This is our guidance rather than the brand's. Measure door swing and any landing turns too, because a 180cm-wide mattress is the size where staircases start to bite.
Should I get the Copper Arthur in a king or a super king?
If you share with a restless partner, or children and pets join you often, the UK super king's extra 30cm of width makes a real difference. Both are 200cm long, so it comes down to width and room size: the UK king needs at least 2.7m x 2.9m, the UK super king at least 3m x 2.9m.
Does the Copper Arthur come as a zip and link super king?
The listing doesn't mention a zip and link option, so treat this as a one-piece 180 x 200cm mattress and check the stairs and landing before ordering. If access is tight, the UK king at 150cm wide is easier to manoeuvre, and we suggest at least 2.7m x 2.9m of room for it.