Arthur Sleep Cool Memory Mattress
The Arthur Sleep Cool Memory Mattress is a hybrid with a medium firm feel, which means you get the contouring of foam with the support of springs underneath.
- Cooling gel foam for warm sleepers
- Suits back & combination sleepers
- Foam comfort over spring support
£225
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The Arthur Sleep Cool Memory Mattress includes a cooling gel foam layer, designed to draw heat away so you feel less clammy through the night. It sits at the affordable end for a hybrid, and it comes in five UK sizes from Single to Super King. The maker publishes little detail beyond the basics, so if you like to compare depths and spring counts you may find the spec sheet a little thin.
Mattress specifications
Firmness
Medium Firm
Type
Hybrid
Depth (cm)
Number of Layers
4
Trial Period (nights)
Warranty (years)
Price Range
£225 to £435
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Combination Sleeping
Certifications
Assessed from Arthur Sleep's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
Choose this one if you sleep warm and want a hybrid on a budget. The cooling gel foam is there to manage heat, a common complaint with traditional memory foam, and the medium firm feel suits most back and combination sleepers, although lightweight side sleepers may find it slightly too firm at the shoulder. It undercuts a lot of the hybrid market. Yes, the published information is sparse, but the essentials, foam comfort over springs with a temperature-focused top layer, are a sensible formula.
Key features & layer details
Gel foam
A cooling, breathable gel foam that cradles you in a similar way to memory foam. It sits at the top, so it is the layer that manages heat first and gives the mattress its softer surface feel.
Memory foam
A memory foam layer that works with the gel foam above it to add support and comfort. It helps the surface ease around your body rather than pushing back against it.
Comfort foam
A high-resilience convoluted foam comfort layer, there for pressure relief. It adds a bit of bounce between the softer foams and the springs below.
800 pocket springs
Individually fabric-wrapped pocket springs that give targeted support and help isolate motion. Because each spring works on its own, you should notice less of a partner's movement across the bed.
Layer details from arthursleep.co.uk and mattressman.co.uk product pages, October 2026.
Best suited for?
Warm sleepers
The cooling gel foam layer is designed to draw heat away, which means you should feel less clammy through the night than on traditional memory foam.
Budget buyers
Sitting at the affordable end for a hybrid, it gives you foam comfort over springs while undercutting a lot of the hybrid market.
Back sleepers
A medium firm feel suits most back sleepers, giving a steady, supportive surface under a foam top layer with a temperature-focused design.
Combination sleepers
The medium firm feel suits most combination sleepers, so moving between positions during the night should feel even rather than sinking in or sitting too hard.
If you want full transparency on construction, depth or spring count before spending, this mattress makes that difficult, as the brand publishes only a basic description. It is also not for anyone who needs a stated sleep trial or guarantee confirmed up front, since neither is listed. Lightweight side sleepers may find medium firm a touch too solid.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Arthur Sleep Cool Memory Mattress
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FAQ's
How firm is the Arthur Sleep Cool Memory Mattress?
It is listed as medium firm, a middle-of-the-road feel with a slight lean towards support. That tends to suit back sleepers and heavier side sleepers, though lighter side sleepers may find it a little firm around the hips and shoulders.
Is the Arthur Sleep Cool Memory Mattress good for hot sleepers?
It is designed with hot sleepers in mind. The mattress includes cooling gel foam, which means the comfort layer is built to disperse body heat rather than trap it, a common issue with standard memory foam. Its hybrid build also allows more airflow through the spring layer than an all-foam design.
How much does the Arthur Sleep Cool Memory Mattress cost?
It depends on the size you choose, and the price table on this page shows the current price for each size. It sits at the more affordable end for a hybrid mattress with a cooling foam layer.
What sizes does the Arthur Sleep Cool Memory Mattress come in?
It comes in five UK sizes: Single, Small Double, Double, King and Super King. That covers most bed frames sold in the UK, though there is no EU or bespoke sizing listed.
Does the Arthur Sleep Cool Memory Mattress come with a trial or guarantee?
Neither is stated on the brand's own product page, which is unusual and worth checking before you buy. If a trial period or guarantee matters to you, confirm the terms directly with the retailer you order from, as none are published.
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