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Arthur Sleep Cool Memory 800 Hybrid Mattress - image 1
95% of customers keep their mattress
Arthur Sleep Cool Memory 800 Hybrid Mattress - image 2 Arthur Sleep Cool Memory 800 Hybrid Mattress - image 3 Arthur Sleep Cool Memory 800 Hybrid Mattress - image 4 Arthur Sleep Cool Memory 800 Hybrid Mattress - image 5 Arthur Sleep Cool Memory 800 Hybrid Mattress - image 6 Arthur Sleep Cool Memory 800 Hybrid Mattress - image 7 Arthur Sleep Cool Memory 800 Hybrid Mattress - image 8 Arthur Sleep Cool Memory 800 Hybrid Mattress - image 9 Arthur Sleep Cool Memory 800 Hybrid Mattress - image 10 Arthur Sleep Cool Memory 800 Hybrid Mattress - image 11 Arthur Sleep Cool Memory 800 Hybrid Mattress - image 12 Arthur Sleep Cool Memory 800 Hybrid Mattress - image 13

Arthur Sleep Cool Memory 800 Hybrid Mattress

4.8/5
A full 30cm deep, this hybrid layers gel and memory foam over pocket springs for cloud-like, medium-firm comfort.
iconMedium Firm
iconMemory Foam
icon800 Pocket Springs
icon30cm depth
  • Pocket Sprung Support
  • Gel Foam Layer
  • Supportive Memory Foam
  • Quilted Fabric Cover
Price Promise

Seen it cheaper somewhere else? We'll match it — that's our Price Promise.

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£299
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Description
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Available in 10 Showrooms
1 Year Guarantee
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The Verdict

What 62 sleepers really think

Rated 4.8/5 from 62 verified reviews
The Arthur Sleep Cool Memory mattress is praised for its exceptional comfort and support with many users experiencing improved sleep quality. It is appreciated for its value for money, offering affordability without compromising on quality. Some enjoyed the firm support, noting it doesn't feel overly hard. However, a few mentioned it may feel firmer than expected and not deliver a noticeable cooling effect.

AI-generated from the text of customer reviews

Why This Mattress

Why buy the Arthur Sleep Cool Memory 800 Hybrid Mattress?

Every mattress is different. Scan for the ones that sound like you — if two or more fit, this is your mattress.

Best For
All Positions
Side one night, back the next?
A balanced feel that supports you whether you sleep on your side, back or front.
Helps with
Breathable
Wake up clammy?
Airy construction lets heat and moisture escape, so the sleep surface stays fresh through the night.
Helps with
Disturbance
Partner tosses and turns?
Springs that move independently absorb motion, so a restless partner is far less likely to wake you.
Helps with
Allergies
Wake up itchy or sneezy?
Hypoallergenic fillings and covers help keep dust mites and allergens at bay - ideal for allergy-prone sleepers.
Helps with
Pressure Relief
Achy hips or shoulders?
Cushioning comfort layers spread your weight evenly, easing pressure around hips and shoulders.
Thermal Control
Cooling
Sleep hot?
Breathable layers draw heat away from you overnight, for a cooler sleep if you tend to run warm.
Helps with
Anti Bacterial
Freshness a priority?
A treated finish that stops bacteria building up, keeping things fresher and more hygienic for longer.
Helps with
Anti Microbial
Musty smells worry you?
Resists the microbes that cause mould and odours, helping the sleep surface stay clean and fresh.
How It Feels

How firm is it?

Medium Firm

Medium Firm is the level of support to the body, suitable for average to heavily weighted people. This is not a comfort rating.

About the Brand
★ 4.83 brand rating

Arthur Sleep is an exclusive brand offering convenient, low-maintenance mattress solutions for all sleepers. With innovative pocket sprung and memory foam hybrids, they prioritize comfort and support. Featuring 100% hypoallergenic materials and a Which? Best Buy endorsement, Arthur Sleep ensures quality and restful nights for years.

View all Arthur Sleep
Real Sleepers

What our customers say

4.8
Product Rated 4.8 Stars
62 reviews
Average Customer Ratings
Comfort4.8
Durability4.8
Quality4.8
Value for money4.8
Rating Snapshot
5 stars
54
4 stars
6
3 stars
1
2 stars
0
1 stars
1
Excellent54
Great6
Average1
Bad1
Elizabeth Jonah
Customer Rated This 5 Stars 5/5
04 Mar 2026
Great mattress for the price. It arrived the very next day which was a nice surprise and the delivery was smooth. The price was really good compared to others I looked at. I’ve only just started using it so it’s too soon to say whether it has helped with my back yet, but first impressions are very positive. It’s comfortable and nicely firm, which is exactly what I was hoping for. Very happy with the purchase so far.
Value5
Quality5
Durability5
Comfort5
Verified By trustpilot verification
Bianca Noel
Customer Rated This 5 Stars 5/5
12 Nov 2025
Best sleep we’ve had in a long time! Fantastic quality and delivery service smooth, polite delivery workers, matressman kept us up to date from purchase and throughout we couldn’t have picked a better mattress and service, a pleasure to deal with and would defo purchase from matressman again thank you!!
Value5
Durability5
Quality5
Comfort5
Verified By trustpilot verification
Michael Morris
Customer Rated This 5 Stars 5/5
04 Oct 2025
What can I say? A few weeks in & still sleeping in comfort. Great delivery, simple instructions, easy to do (but advise 2 people to get it to the bedroom & in place). After buying from Dreams & paying an extortionate price for very poor quality& even worse customer service, this is a dream come true.
Quality5
Durability5
Comfort5
Value5
Verified By trustpilot verification
Cheryl Fells
Customer Rated This 5 Stars 5/5
17 Mar 2026
Amazing quality, deep & firm mattress. Great sleep, look forward to getting into bed. I used to wake with pain, aches & restless but I sleep solid through night & wake refreshed with this new mattress. Excellent company , next day delivery. Cant express how pleased I am.
Value5
Durability5
Quality5
Comfort5
Verified By trustpilot verification
Antonette Branney
Customer Rated This 5 Stars 5/5
31 Mar 2026
Really happy with this medium firm mattress. It’s the perfect balance — supportive without feeling too hard, and comfortable without sinking. I’ve noticed less back ache and better sleep overall. Great all-rounder, especially if you want both comfort and support.
Value5
Durability5
Quality5
Comfort5
Verified By trustpilot verification
Martin Housego
Customer Rated This 5 Stars 5/5
22 Aug 2026
Needed to upgrade my old mattress and this one ticked all the right boxes, after trying several options and advice from the sales room colleague I found this. Haven’t had it long, so I can’t judge durability..
Comfort5
Value4
Quality5
Verified By trustpilot verification
Viewing 1 to 6 of 62
Our Promise

The Cool Memory 800 Hybrid Mattress has

A 60-night sleep trial Sleep on it at home — love it, or exchange it between nights 30 and 60.
A 95% keep rate Not a survey — our own order data, updated weekly.
A 1 year guarantee See exactly what's covered, and for how long.
Price Match Promise Seen it cheaper somewhere else? We'll match it.
·
Good To Know

Frequently asked questions

Is this mattress suitable for allergy sufferers?
Yes, this mattress is recommended for allergy sufferers due to its specific fillings and fabric that help minimise allergens.
What does the pocket sprung system do in this mattress?
The pocket sprung system consists of individual springs encased in fabric, allowing them to move independently. This design provides support that contours to your body and reduces motion transfer, so you won't be disturbed by movement from your partner.
Can you explain the benefits of the gel foam layer?
The gel foam layer helps with temperature regulation and provides additional comfort by contouring to your body, making it a great addition for a cooler night's sleep.
Does this mattress require flipping?
No, this mattress is one-sided, so there is no need to flip it, but it is recommended to rotate it occasionally for even wear.
What type of cover does this mattress have?
The mattress features a knitted cover that stretches to fit the mattress's shape, providing great elasticity and breathability for added comfort.
What specific benefits does the quilted fabric cover provide for sleeping?
The quilted fabric cover of the Cool Memory mattress adds a soft, luxurious feel, enhancing overall comfort while you sleep. Additionally, it promotes airflow, which helps keep the mattress fresher and prevents overheating, ensuring a more restful night. This combination of comfort and breathability makes it suitable for a better sleep experience, regardless of the season.
What kind of support can I expect from the memory foam?
The memory foam in this mattress is designed to mould to your body and relieve pressure points, ensuring a comfortable and supportive sleep.
Is this mattress suitable for all sleeping positions?
Yes, the combination of pocket springs and memory foam offers support and comfort for various sleeping positions, accommodating different preferences.
What does it mean that this mattress has a micro quilted finish?
A micro quilted finish involves stitching together the fabric and fillings, resulting in a patterned comfort quilt layer that enhances the overall softness and comfort.
Better Together

Also paired with

Still Deciding?

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Where to next?

Arthur Sleep Mattresses
Arthur Sleep Medium Firm Mattresses
Arthur Sleep Pocket Sprung Mattresses
Arthur Sleep Cool Sleep Range

60-night sleep trial: exchanges only, not refunds. Activated by purchasing a mattress protector at the point of order. Request your exchange between nights 30 and 60 of the trial; a £50 exchange fee applies. Full terms.

Keep rate: the share of this product's delivered orders in the last 6 months that were kept rather than returned. Updated weekly, rounded down, capped at 99%, and only shown where we have at least 30 delivered orders.

Recommendation rate: the percentage of verified Trustpilot reviews for this product with a rating of 4 stars or more, rounded down.

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