Aspire Natural Cashmere and Silk 3000 Pocket King Size Mattress
The Aspire Natural Cashmere and Silk 3000 Pocket Mattress is a medium to firm pocket spring mattress with natural fillings of cashmere, wool and silk over 3,000 springs (a count based on the kingsize).
- Breathable cashmere, wool & silk
- Two-tier springs adapt to your shape
- Eases pressure at hips & shoulders
£539
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Aspire Natural Cashmere and Silk 3000 Pocket Mattress
More available sizes
Mattress details
Mattress
Aspire Natural Cashmere and Silk 3000 Pocket Mattress
Size
Firmness
Medium Firm
Construction
Pocket Spring
Natural
Depth (cm)
28
Layers
5
Layer Details
Cashmere
A luxuriously soft natural filling that breathes well and wicks moisture, which means less clamminess on warm nights. It sits at the sleep surface for a gentle first feel.
Wool
Wool is a natural insulator with strong temperature-regulating properties. In practice it helps keep you warm in winter and cooler in summer, making it useful all year round.
Silk
Silk adds a sumptuous, breathable layer of comfort. It's resilient too, so the surface should keep its feel rather than flattening quickly.
Mini Pocket Springs
2,000 small, individually cased springs sit slightly compressed to retain their springiness. They add a responsive comfort layer with soothing pressure relief for hips and shoulders.
Pocket Springs
1,000 traditional pocket springs, each encased in its own cloth pocket, react individually to your shape. That means adaptive support and less motion transfer to a partner.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- Genuine space for two: At 75cm each for two people sharing, you can both change position without negotiating for territory in the night.
- Less disturbance across the bed: The 1,000 individually pocketed springs react to each sleeper separately, so an early riser slipping out at 5am is less likely to wake their partner.
- Extra length for taller sleepers: At 200cm, the UK king is 10cm longer than the UK double, which matters far more than width if one of you is nudging six foot.
- The full spring count, as quoted: Aspire's 3,000-spring figure is based on the kingsize itself, so in this size you're getting exactly the count on the label.
- Natural fillings across a wider surface: Cashmere, wool and silk breathe and regulate temperature, useful when two bodies share one bed and the warmth builds up.
This size suits you if...
You share the bed every night and a UK double has started to feel like a compromise, you and your partner keep different hours and want the pocket springs' motion isolation to have space to work, or one of you is tall enough that a standard 190cm mattress leaves feet hanging. Allow at least 2.7m x 2.9m of bedroom for this size.
Consider another size if...
Your bedroom falls short of the 2.7m x 2.9m we suggest for a UK king. We'd recommend the UK double instead: it's 15cm narrower and 10cm shorter, and we suggest at least 2.6m x 2.8m for it.
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FAQ's
Is the Aspire Cashmere and Silk 3000 in a UK king big enough for a couple?
Comfortably, for most. At 150 x 200cm you get 75cm each for two people sharing, and the individually pocketed springs limit how much movement travels across that width. If you share with a dog who claims a stripe of the bed most nights, the UK super king is 30cm wider still.
What room size do I need for the Aspire 3000 in a UK king?
We suggest at least 2.7m x 2.9m, which leaves enough clearance to walk round the bed and open drawers. That's our guidance rather than Aspire's. Measure with wardrobes and bedside tables in place, since a new build master bedroom can shrink quickly once the furniture goes in.
Should I get this Aspire mattress in a UK king or a UK double?
The UK king is 15cm wider and 10cm longer than the UK double. The width is the difference you feel every night as a couple, while the length is the deciding factor if either of you is tall. Sleeping solo, or short on floor space? The UK double will serve you fine.
Is a UK king long enough for someone over six foot?
The UK king runs 200cm long, listed as 6ft 6in in imperial, so a sleeper just over six foot has clear room before their feet reach the edge. That extra 10cm over the UK double is often the real reason taller people size up, more than the width.
Can one person rotate the king size Aspire Cashmere and Silk 3000?
We wouldn't suggest trying. Across owner reviews this mattress is described as very heavy, and in the 150 x 200cm king that weight is spread over an awkward area to grip. Plan on two people for rotation, and clear space around the bed before you start.