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98% of customers keep their mattress

Arthur Sleep Spare Arthur Mattress

Name: Spare Arthur
Brand: Arthur Sleep
SKU: 261764-869693
Price: 399 GBP
Availability: InStock
Rating: 4.7 (140 reviews)

4.7/5

An extra deep hybrid pairing mini and full pocket springs with a 20mm memory foam layer for medium-firm comfort.

Medium Firm

Hybrid

1500 Pocket Springs

32cm depth

Luxurious Extra Deep Mattress
20mm Memory Foam Layer
Combination of Mini and Pocket Springs
Vacuum Packed for Easy Moving

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£399

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Description

For a mattress that provides super sleep, convenient delivery and is fantastic value for money, look no further than the Spare Arthur from Arthur. Featuring pocket springs, sumptuous foam layers and a medium support tension, you’ll never want to get up out of bed. Read below to explore the fantastic qualities that Arthur has incorporated into their Spare Arthur mattress.

1500 pocket springs

An impressive combination and comfort and core pocket springs providing the foundation for better sleep. Each spring is encased within a fabric pocket and reacts individually to body movements, providing targeted support, helping to relieve pressure, and soothe minor aches and pains.

3 luxury layers of memory foam

Why have one foam layer when you can have three? Accentuating the sumptuous body-moulding effects of pocket springs, Arthur has incorporated three heavenly layers of foam to provide the ultimate comfort. Including a layer of comfort soft foam, memory foam and another layer of soft foam, they work together to minimise motion transfer so you won’t feel your partner moving throughout the night. Complemented by a super-soft top layer, you’ll never want to get out of bed when you’re sleeping on the Spare Arthur.

Vacuum-packed delivery

Upgrading your mattress can be a bit of a chore, especially if you have to drag a brand new mattress up a flight of stairs or through your home. However, this isn’t the case with the Spare Arthur. Arriving rolled and vacuum-packed, getting a new mattress has never been easier. Bed in the box mattresses are super-easy to manoeuvre, especially when it comes to navigating stairs or awkward spaces around your home. When you’ve reached the bedroom of choice, simply remove it from the box, place it on the bed frame and remove it from the vacuum packaging. In about 4 hours the mattress will be good, but it will take up to 24 hours to fully return to its original size.

About Arthur

You’ll be ‘Arthur Sleep’ in no time with a sleeping solution from Arthur. At the forefront of their operations is to provide the nation with super-sleep in the most convenient way possible, with the Arthur mattress range featuring many fantastic qualities and bed in a box delivery. Browse the range of Arthur mattresses, where there is an option for every kind of sleeper amongst their collection.

Would a medium firm tension be right for me?

Medium firm tension has the versatility that other tensions are missing since it suits side, front and back sleepers. The support level on the Spare Arthur mattress provides cushioning for shoulders and hips, promoting healthy spine alignment all night long. Plus, this tension is perfect for couples as it allows you and your partner to both sleep in your preferred positions without either of you waking up with aches or pains.

Specifications

Dimensions

Available in 12 Showrooms

1 Year Guarantee

Flexible Credit Options

The Verdict

What 140 sleepers really think

Rated 4.7/5 from 140 verified reviews

The Arthur Sleep Spare Arthur mattress is highly praised for its exceptional comfort and supportive structure. Many appreciate its suitability for both adults and children, providing a restful night's sleep. Customers frequently comment on its excellent quality and sensible pricing. Some have noted that the mattress is quite heavy, making it a bit challenging to maneuver when changing bedding, but overall satisfaction remains high.

AI-generated from the text of customer reviews

Why This Mattress

Why buy the Arthur Sleep Spare 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

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

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

Warming

Cold sleeper?

Insulating layers that hold on to warmth, just the thing for cold sleepers and chilly bedrooms.

How It Feels

How firm is it?

Softest Extra Firm

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

4.7

140 reviews

Average Customer Ratings

Comfort4.7

Durability4.7

Quality4.8

Value for money4.7

Rating Snapshot

5 stars

113

4 stars

3 stars

2 stars

1 stars

Customer Photos

Excellent113

Great20

Average3

Poor1

Bad3

Catriona Thompson

5/5

06 Jan 2026

I was a bit dubious about buying a mattress in a box, but I chose this one because it is much deeper than others I have seen that are similar. Although there is a warning on the packaging about how this springs out when it is taken out of the packaging, take it note because it really does. I’ve only had it a few weeks, but it is very comfortable, firm but with a pillowy top, I’m very pleased with it so far. My only comment is that it is very, very heavy, which I have noticed when changing the sheets. This isn’t a complaint, just something to point out if you are considering buying one and this could impact you for example with delivery options. I intend to buy another one of these for my son the next time I change his mattress.

Comfort5

Durability5

Quality5

Value5

Jane Clipston

5/5

01 Mar 2024

very good quality and very comfortable. Well packed to move into place and easy to unroll Only just got it so can’t comment on maximum comfort levels (blurb says need 30 days to get settled with it) but very happy so far and would recommend. Much better than expected for the price

Comfort5

Quality5

Value5

V Askey

5/5

06 Dec 2025

I have owned this mattress for about 3 weeks and so far it's super comfortable, I actually look forward to climbing into bed. I was sceptical because of the price but I was wrong. When I need another mattress in a few years I will be back for another Arthur.

Value5

Quality5

Durability5

Comfort5

Megan Vaughan

5/5

29 Aug 2024

Absolutely love my new mattress. Only had it 2 weeks so cannot comment on durability yet, but for comfort/quality/value its 5 star. Brilliant delivery by driver Keith, cannot fault him. If you're wondering whether to buy this just do it! You won't regret it

Comfort5

Quality5

Value5

Matthew Dunckley

5/5

01 May 2026

This mattress arrived as a compressed, vacuumed unit and rapidly expanded to size when unpacked. It was quite expensive but is extremely comfortable and should last for several years, promoting an excellent rest/sleep pattern.

Value4

Quality5

Durability4

Comfort5

Graham Worboys

5/5

26 Aug 2025

Extremely comfortable and excellent value for money, it’s actually the second Arthur mattress we have purchased, so I’m very pleased with the mattress, and as always excellent customer service from Mattessman

Quality5

Comfort5

Value5

Viewing 1 to 6 of 140

Our Promise

The Spare Arthur Mattress has

A 60-night sleep trial Sleep on it at home — love it, or exchange it between nights 30 and 60.

A 98% 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

What type of springs are used in the Spare Arthur mattress?

The Spare Arthur mattress features a combination of mini and pocket springs, which work together to provide independent support and help prevent motion transfer.

Is the mattress suitable for people who prefer a softer feel?

Yes, the Spare Arthur mattress includes a 20mm layer of memory foam that moulds to your body, offering a plush and comfortable sleeping experience.

How is the Spare Arthur mattress delivered?

The mattress is vacuum packed and rolled for easy handling and manoeuvrability, making it convenient to transport and set up in your home.

Does the Spare Arthur mattress require turning?

No, the Spare Arthur mattress is designed to be one-sided, so you don't need to turn it, but it is recommended to rotate it periodically for even wear.

What is the warranty period for the Spare Arthur mattress?

The Spare Arthur mattress comes with a 10-year warranty, giving you peace of mind regarding its durability and quality.

Will the mattress have any odour when first unpacked?

You may notice a slight odour due to the fire retardant spray used, but this should dissipate within 2 to 4 weeks.

What type of cover does the Spare Arthur mattress have?

It features a knitted cover that provides great elasticity and breathability, enhancing comfort and allowing it to stretch with the mattress.

Can I easily move the Spare Arthur mattress once it's set up?

Yes, the mattress has handles attached to the border, which make it easier to rotate and move when needed.

What kind of comfort foam is used in the mattress?

The Spare Arthur mattress includes comfort foam, which offers similar support to memory or reflex foam but at a more affordable price.

How long does it take for the mattress to fully expand after unrolling?

After you unroll the mattress, it's best to leave it for 4 to 24 hours to fully expand. This allows it to reach its intended shape and comfort level.

Better Together

Also paired with

Snuggle Beds Snuggle Pillow

5/5 (5 Reviews)

From £20

SleepSoul Dual Pillow Pillow

4/5 (3 Reviews)

From £26

Panda Bamboo Mattress Protector Double Protector

Mattress Protect Everyday Double Protector

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More To Explore

Where to next?

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Arthur Sleep Medium Firm Mattresses

Arthur Sleep Pocket Sprung Mattresses

Arthur Sleep Core Comfort 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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Material

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Colour

Arthur Sleep Spare Arthur Mattress

1500 pocket springs

3 luxury layers of memory foam

Vacuum-packed delivery

About Arthur

Would a medium firm tension be right for me?

What 140 sleepers really think

Why buy the Arthur Sleep Spare Arthur Mattress?

How firm is it?

What our customers say

The Spare Arthur Mattress has

Frequently asked questions

Also paired with

Other mattresses to consider

Where to next?