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Free next day delivery * Old mattress removal Two million happy customers 60-night sleep trial Rated Excellent - 4.8 out of 5
Arthur Sleep Ortho Arthur Mattress - image 1 Arthur Sleep Ortho Arthur Mattress - image 2 Arthur Sleep Ortho Arthur Mattress - image 3 Arthur Sleep Ortho Arthur Mattress - image 4 Arthur Sleep Ortho Arthur Mattress - image 5 Arthur Sleep Ortho Arthur Mattress - image 6 Arthur Sleep Ortho Arthur Mattress - image 7 Arthur Sleep Ortho Arthur Mattress - image 8 Arthur Sleep Ortho Arthur Mattress - image 9 Arthur Sleep Ortho Arthur Mattress - image 10 Arthur Sleep Ortho Arthur Mattress - image 11 Play Videovideo overlay

Arthur Sleep Ortho Arthur Mattress

4.8/5
Orthopaedic support runs deep here, with 2000 pocket springs and gel memory foam in a 34cm build, firmer for front and back sleepers.
iconFirmer
iconGel Foam
icon2000 Pocket Springs
icon34cm depth
  • Luxury Knitted Soft-touch Cover
  • Innovative gel memory foam
  • High Density Support Foam
  • Vacuum Packed for Easy Moving
Price Promise

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

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£399
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Available in 10 Showrooms
1 Year Guarantee
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The Verdict

What 60 sleepers really think

Rated 4.8/5 from 60 verified reviews
Customers praised the Arthur Sleep Ortho Arthur mattress for its comfort and support, particularly highlighting its firmness and ability to improve sleep quality. Many noted reduced back and neck pain, and appreciated the added comfort from the foam top layer. Several reviews mentioned its suitability for side sleepers and its high-quality build. However, some found it heavier or firmer than expected, affecting ease of handling.

AI-generated from the text of customer reviews

Why This Mattress

Why buy the Arthur Sleep Ortho Arthur Mattress?

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

Best For
Back + Stomach
Back or front, never sure?
Steady, even support that keeps your spine level whether you settle on your back or your front.
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.
Helps with
Back Pain
Achy back in the morning?
A supportive, orthopaedic-grade build helps keep your spine aligned and takes the strain off your back.
Thermal Control
All Season
Hot in July, cold in January?
A balanced build that doesn't run hot in summer or cold in winter, so it works all year round.
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.
Suitability
Adults
Buying for a grown-up bed?
Built for full-grown sleepers, with the depth and support to take adult weight night after night.
How It Feels

How firm is it?

Firmer

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

About the Brand
★ 4.82 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
60 reviews
Average Customer Ratings
Comfort4.8
Durability4.8
Quality4.9
Value for money4.8
Rating Snapshot
5 stars
52
4 stars
6
3 stars
1
2 stars
1
1 stars
0
Excellent52
Great6
Average1
Poor1
Glen Barrett
Customer Rated This 5 Stars 5/5
09 Mar 2026
We recently purchased the Arthur Sleep Ortho Arthur 5’ King Size Mattress and it has completely transformed our sleep. From the very first night the difference was noticeable. It offers the perfect balance of firm orthopaedic support while still feeling incredibly comfortable and luxurious. The pocket springs provide excellent support across the whole mattress, keeping your back properly aligned and reducing any pressure points. I’ve also noticed far less movement when my partner turns during the night, which makes for a much deeper, uninterrupted sleep. The quality is outstanding – it feels well made, thick, and durable, and the finish gives it a real premium feel. It also stays cool throughout the night which is a huge plus. If you’re looking for a high-quality, supportive king size mattress that helps you wake up feeling refreshed and pain-free, I genuinely couldn’t recommend this one more highly. Fantastic value for money and one of the best purchases we’ve made for our home.
Value5
Comfort5
Durability5
Quality5
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Diane Johnson
Customer Rated This 5 Stars 5/5
09 Oct 2025
This mattress is very impressive. I was amazed when it arrived all rolled up and thought no way is this mattress going to be ok. However when the delivery men cut the plastic and unrolled it ....well it was like magic. It just kept expanding and after 2 hours or so we have this amazing very thick mattress which l have to say is fabulous. We like a pretty firm mattress and went for the firmer one. We are not disappointed! It's great and it weighs a ton. Very deep it's 34 cm so some of our fitted sheets are a bit snug. Overall a brilliant buy. Would definitely recommend.
Value4
Quality5
Comfort5
Durability5
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Lenka Luckhurst
Customer Rated This 5 Stars 5/5
11 Sep 2025
really good spinal support. Surface foam layer very comfortable, helpfully eases my shoulder pain. Cooling layer effective against hot flushes. The only issue we have is that we weren't quite prepared for the increase in height - our old mattress was a (squashed) 20cm and this is 34cm deep. It is wonderfully easy to get out of bed but we have bought foot stools for sitting on the edge of the bed and will need to increase the height of the bedside tables substantially
Value5
Quality5
Comfort5
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Theresa Colclough
Customer Rated This 5 Stars 5/5
01 Aug 2025
“My son chose this mattress online, and I was initially hesitant about him buying one without trying it out first—especially since he wanted a firm mattress. However, he’s absolutely delighted with it! He’s 6’4” and the king size fits him perfectly. The mattress looks well made and, despite being firm, it’s incredibly comfortable.”
Comfort5
Quality5
Value5
Durability5
Verified By trustpilot verification
David White
Customer Rated This 5 Stars 5/5
02 Jul 2025
Mattress supplied for Berlin bed but too heavy for base !alternative offered a lighter weight one not to same quality as this Finally base supplier sent heavier duty lifts and this mattress returned all good now
Durability5
Value4
Quality5
Comfort5
Verified By trustpilot verification
M Bullen
Customer Rated This 5 Stars 5/5
19 Dec 2025
Had mattress for about a month now unbelievable sleeping through the night no aches or pains in morning best money ever spent mind you my old one was between 15-20 yrs old so guess due for replacement
Durability5
Quality5
Comfort5
Value5
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Viewing 1 to 6 of 60
Our Promise

The Ortho Arthur Mattress has

A 60-night sleep trial Sleep on it at home — love it, or exchange it between nights 30 and 60.
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 the Ortho Arthur mattress suitable for allergy sufferers?
Yes, the Ortho Arthur mattress is recommended for allergy sufferers due to its special fillings and fabric, which help minimise allergens.
How does the memory foam in this mattress provide comfort?
The innovative gel memory foam moulds to your body shape, offering pressure relief and ensuring that it always recovers to its original state for lasting comfort.
Do I need to turn the Ortho Arthur mattress regularly?
This mattress is one-sided, so there's no need to turn it, but it's recommended to rotate it periodically for even wear.
What is the advantage of the pocket sprung design?
The pocket sprung design features individually encapsulated springs that move independently, providing body moulding support and reducing the likelihood of rolling together during the night.
How is the Ortho Arthur mattress delivered?
The mattress is delivered rolled up, making it easier to manoeuvre into your home, and it will fully expand within 4 to 24 hours after unpacking.
What kind of cover does the Ortho Arthur mattress have?
It has a luxury knitted soft-touch cover that stretches with the mattress, offering great elasticity and breathability for added comfort.
Is there a warranty on the Ortho Arthur mattress?
Yes, the Ortho Arthur mattress comes with a 10-year warranty, providing you with peace of mind regarding its quality and durability.
What features contribute to the comfort of the mattress?
The mattress features a micro quilted finish for a plush feel, along with a pillow top effect that includes soft fillings for additional comfort.
Are there handles on the mattress for easier handling?
Yes, the Ortho Arthur mattress has handles attached to the border, which makes it easier to rotate and move around.
What is the fire safety rating of the Ortho Arthur mattress?
The mattress is rated Source 2 for domestic flammability, indicating it meets low hazard standards for general domestic use.
Better Together

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Where to next?

Arthur Sleep Mattresses
Arthur Sleep Firmer Mattresses
Arthur Sleep Pocket Sprung Mattresses
Arthur Sleep Precision 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.

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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