Aspire Natural Cashmere 1000 Pocket Super King Mattress
The Aspire Natural Cashmere 1000 Pocket Mattress pairs natural fillings, cashmere and wool, with 1,000 pocket springs (counted on the kingsize) for a medium feel.
- Natural cashmere & wool fillings
- Stays cooler & drier on warm nights
- Support that follows your shape
£439
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Aspire Natural Cashmere 1000 Pocket Mattress
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Mattress details
Mattress
Aspire Natural Cashmere 1000 Pocket Mattress
Size
Firmness
Medium Firm
Construction
Pocket Spring
Wool
Natural
Depth (cm)
28
Layers
4
Layer Details
Cashmere
A luxuriously soft natural filling that sits at the top of the mattress. It's highly breathable with good moisture-wicking properties, which means the sleep surface should stay drier and cooler through the night.
Wool
A natural insulator with strong temperature-regulating properties. In practice, it helps keep you warm in winter and stops heat building up in summer.
Recycled polyester fibres
A layer of recycled polyester fibres that boosts the softness and comfort of the mattress. It adds a little extra cushioning between the natural fillings and the springs.
Pocket Springs
1,000 individual pocket springs, a count based on the kingsize, each responding separately to pressure. That means individualised support for your sleep posture, which can help relieve aches and pains.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- 90cm each for two sharers: Two people get 90cm each, which means a restless partner can turn over all night without their movement reaching your side.
- Independent springs suit the extra width: The 1,000 pocket springs respond separately to pressure, so across a 180cm-wide surface each sleeper gets support shaped to them, not a compromise between two bodies.
- Space for night-time visitors: If children or a large dog end up in the bed most nights, the extra 30cm over a UK king means the adults still keep a fair share.
- Natural fillings across a large surface: Cashmere wicks moisture and wool regulates temperature, useful when two warm bodies share one bed, and rarer still at this size on a modest budget.
- Fills a larger master properly: In a big period bedroom or a new build master, a UK super king sits in proportion where a smaller bed can look a little lost.
This size suits you if...
You share the bed every night and want the maximum standard sleeping space UK retailers offer, your partner moves around enough that distance matters more than any comfort layer, or children and pets treat your bed as their own and you'd like everyone to keep a fair share. You'll also want a bedroom that comfortably clears our suggested minimum of 3m x 2.9m.
Consider another size if...
Your bedroom falls short of the 3m x 2.9m we suggest as a minimum, or you sleep alone. We'd recommend the UK king instead: it's 30cm narrower, the same length, and we suggest at least 2.7m x 2.9m for it.
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FAQ's
How big is the Aspire Natural Cashmere 1000 in a UK super king?
It measures 180 x 200cm, or 6ft x 6ft 6in in imperial. For two people sharing, that's 90cm each, enough that most couples stop noticing each other's movement, helped by the pocket springs responding to each sleeper individually.
What room size do I need for the Aspire Natural Cashmere in a UK super king?
We suggest at least 3m x 2.9m, and that's our guidance rather than Aspire's. That allows walking space on both sides and room for bedside tables. Before ordering, measure the landing turns and door swing too: a mattress this size is where staircases start to bite.
Is a UK super king worth it for a restless partner?
Often, yes. With 90cm of width each, distance does more than any comfort layer to keep disturbance down, and the 1,000 pocket springs move independently, so pressure on one side isn't transmitted across the bed. If your room can take it, this is the size built for exactly that problem.
Is this size a good choice if children climb in at night?
It's the most practical one. The UK super king is 45cm wider than the UK double and 30cm wider than the UK king, so a wandering child or a dog with a routine still leaves the adults a workable share. The wool filling also helps stop heat building up with extra bodies in the bed.
Should I get this mattress in a UK king or a UK super king?
If the room allows it and you share the bed, the UK super king is 30cm wider than the UK king at the same length, and that width is what quiets a disturbed night. In a smaller room, we suggest at least 2.7m x 2.9m for the UK king, and it remains a comfortable size for most couples.