Arthur Sleep Cool Gel Double Mattress
The Arthur Sleep Cool Gel Mattress is a hybrid, meaning it combines springs with foam layers, available in five UK sizes from Single up to Super King.
- Medium feel for most sleepers
- Gel-infused foam for cooler nights
- Targeted pocket-sprung support
£279
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Arthur Sleep Cool Gel Mattress
More available sizes
Last seen for £309 at Mattress Man on 10th November 2026
Last seen for £205 at Mattress Man on 4th November 2026
Mattress details
Mattress
Arthur Sleep Cool Gel Mattress
Size
Firmness
Medium
Construction
Pocket Spring
Hybrid
Gel
Depth (cm)
Layers
Layer Details
Key benefits
- The classic couples' footprint: At 135cm wide, two people sharing get 67.5cm each, enough for most couples without the bed dominating the room.
- Fits typical UK bedrooms: Allow at least 2.6m x 2.8m and you should still have space for a wardrobe and drawers, which a UK king often rules out.
- Room for tables both sides: In an average room, the UK double usually leaves enough wall either side for bedside tables, something the wider sizes can't always promise.
- Affordable hybrid in a shared size: A budget hybrid gives couples sprung support with a foam comfort layer on top, which means a forgiving feel without a premium outlay.
- Easy to dress cheaply: Double sheets and 200 x 200cm duvets are sold everywhere at every price point, useful if you're furnishing several rooms at once.
This size suits you if...
You share the bed every night and want the standard couples' size in a room where a UK king would feel cramped, you're furnishing a first flat or a whole house and need a sensible-value hybrid, or you sleep alone and want space to spread out, perhaps with a dog or cat claiming a corner.
Consider another size if...
You and your partner both like room to sprawl, or one of you is tall, since the UK double is 190cm long. We'd recommend the UK king instead, which is 15cm wider and 10cm longer; allow at least 2.7m x 2.9m for it.
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FAQ's
Is the Arthur Sleep Cool Gel Mattress in a UK double big enough for two adults?
For most couples, yes. At 135cm wide it gives two people sharing 67.5cm each. That's the long-standing UK standard, though it's a little snug if either of you sleeps spread out. Arthur Sleep doesn't publish a firmness rating, so how it feels shared is best judged in person rather than on paper.
Will a UK double Arthur Sleep Cool Gel fit in a small bedroom?
We suggest a room of at least 2.6m x 2.8m for a UK double, with around 3m x 3m the comfortable norm. That leaves walking space on both sides and usually room for a wardrobe. If your room is smaller, the UK small double is 15cm narrower and needs at least 2.4m x 2.8m.
Is the Arthur Sleep Cool Gel double a good choice for a guest room?
It's a sensible fit. The UK double accommodates visiting couples, and because this is an affordable hybrid, you're spending less on a bed that's used occasionally. Across verified owner reviews it rates 4.8 out of 5 from 51 reviews on Mattressman, so it shouldn't feel like a compromise for guests.
Should I get the Arthur Sleep Cool Gel in a double or a king?
It comes down to room size and how much space you both want. The UK double is 15cm narrower and 10cm shorter than the UK king, and needs a smaller room: at least 2.6m x 2.8m against 2.7m x 2.9m for the UK king. If the bigger size fits, couples usually appreciate the extra width.
Will a double mattress get up the stairs in an older house?
A 135 x 190cm mattress is generally the easiest shared size to manoeuvre, and hybrids flex a little around turning stairs in older terraces or tight new build landings. Arthur Sleep doesn't publish a weight or depth for this mattress, so check the stairwell and doorways yourself, or ask the retailer before delivery day.