Arthur Sleep Cool Pocket Mattress

Assessed from Arthur Sleep's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.

If you're a hot sleeper on a budget, this is one to shortlist. The gel foam comfort layer is breathable and draws heat away, which means less of that clammy feeling on warm nights, while the 800 pocket springs respond to your body individually for targeted support. It's medium firm, a feel that suits most sleepers, although lightweight side sleepers may find it slightly firm. Available in five UK sizes, it undercuts many rivals, and the 10-year guarantee is reassuring at an affordable starting price. It is single-sided, so no flipping needed, and comes vacuum packed and rolled with turning handles and edge support.

Warm sleepers
The breathable gel foam comfort layer draws heat away from your body, which means a cooler sleeping surface than standard foam on warm nights.

Budget buyers
Sitting at the affordable end of the market with a 10-year guarantee, this gives you a reassuring level of cover without a high starting cost.

Couples
The 800 pocket springs move independently, which helps limit motion transfer so one person turning over is less likely to disturb the other.

Back sleepers
A medium firm feel with responsive pocket springs gives targeted support where you need it, which suits lying on your back.

Combination sleepers
Individually moving pocket springs respond as you shift position, while the medium firm feel suits most sleepers whether you start on your back or your side.

Skip this one if you want an all-natural mattress, as it uses synthetic fillings and foams. Lightweight side sleepers may find medium firm a little too much pressure on hips and shoulders. And if you dislike conditional offers, note the 60-night trial only applies if you add a mattress protector at checkout.

How firm is the Arthur Sleep Cool Pocket Mattress?

Arthur Sleep rates it as medium firm. That's a feel that suits most back and combination sleepers, although lighter side sleepers may find it slightly firm for pressure relief at the shoulder.

Does the Arthur Sleep Cool Pocket Mattress come with a trial?

Yes, there is a 60-night sleep trial, but with a catch: it only applies if you buy a mattress protector at checkout. Worth factoring that into the total cost before you order.

How many springs does the Arthur Sleep Cool Pocket Mattress have?

It has 800 pocket springs, each moving independently to support you where you need it. That sits below premium spring counts, but is reasonable for a mattress at an affordable starting price.

Do you need to flip the Arthur Sleep Cool Pocket Mattress?

No. It's single-sided, so there's no flipping, though it does have turning handles so you can rotate it end to end, which helps it wear evenly over time.

What sizes does the Arthur Sleep Cool Pocket Mattress come in?

Five UK sizes: single, small double, double, king and super king. It comes vacuum packed and rolled with free next day delivery.