Arthur Sleep Cool Rock Single Mattress
The Arthur Sleep Cool Rock is a pocket spring mattress with a firm sleeping surface, which means noticeably more pushback than a medium feel and better spinal alignment if you sleep on your back or front.
- Extra-firm for back & front sleepers
- Support that follows your shape
- Minimises partner disturbance
£155
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Arthur Sleep Cool Rock Mattress
More available sizes
Mattress details
Mattress
Arthur Sleep Cool Rock Mattress
Size
Firmness
Extra Firm
Construction
Pocket Spring
Depth (cm)
Layers
Layer Details
Key benefits
- Fits compact rooms: At 90cm wide it slots into small bedrooms and under loft slopes, and we suggest a floor space of at least 2.1m x 2.8m.
- Extra firm for one sleeper: An extra firm pocket spring surface gives real pushback, which means solid spinal alignment for a back or front sleeper using the bed alone.
- Practical guest option: A no-sink feel works for a spare room that doubles as an office, where visitors of different builds may use it a handful of nights a year.
- Cheap, easy bedding: Single sheets and duvets are the most widely stocked of any size, so kitting out a guest bed or student room costs little.
- Pocket springs at the budget end: Springs that move independently mean less motion transfer and shape-following support, which is uncommon at this price point in a UK single.
This size suits you if...
You need a supportive one-person bed for a spare room, a student flat or a first place where the frame came with the property but the mattress didn't, and you prefer a firm, no-sink feel. It also suits a teenager or heavier solo sleeper who sleeps on their back or front, or a compact room where a 3ft footprint is the only realistic fit.
Consider another size if...
You share the bed regularly, or you sprawl and keep waking at the edge of a 90cm mattress. We'd recommend the UK double instead: it's 45cm wider, the same length, and we suggest a room of at least 2.6m x 2.8m for it.
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FAQ's
What size is the Arthur Sleep Cool Rock UK single?
It measures 90 x 190cm, or 3ft x 6ft 3in, the standard UK one-person size. Standard single fitted sheets and a single duvet (135 x 200cm) fit it, so replacement bedding is cheap and easy to find in any supermarket or department store.
Will the Cool Rock UK single fit a bunk or mid sleeper frame?
The width and length match standard UK single frames, including bunks and cabin beds. Arthur Sleep doesn't publish a depth for this mattress, though, and raised frames often set a maximum mattress height for safety rails, so check your frame's limit with the retailer before ordering.
Is the Cool Rock UK single a good choice for a child's room?
The footprint is ideal: at 3ft wide it leaves room for a desk, wardrobe and toy storage in a typical child's bedroom. The feel is the caveat. This is an extra firm mattress, and lighter children who sleep on their side may find it a little unforgiving.
How much floor space does a UK single need?
We suggest allowing at least 2.1m x 2.8m, which gives you walking room around the bed. That makes the UK single workable in box rooms, loft conversions with sloping ceilings, and guest rooms where two singles plus a walkway make more sense than one larger bed.
Where can I buy the Arthur Sleep Cool Rock in a UK single?
Compare the retailers listed on this page; the prices shown here are updated as retailers change them. Availability shifts over time, so the live table is the reliable place to check current stock for the UK single rather than any figure written into the page itself.