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Account Wishlist Trolley

Small Item Delivery £4.95, free over £100
Large Item Delivery £9.95
A year of fast delivery with Argos Plus

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Bedroom furnitureBedroom furniture
Mattresses

Extra Firm Mattresses

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7 products

Arthur Sleep Cool Rock Arthur Extra Firm Hybrid Mattress - Single

Arthur Sleep Cool Rock Arthur Extra Firm Hybrid Mattress - Single

£149.00

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Sealy Posturepedic Elevate MemorySense Extra Firm Mattress

Sealy Posturepedic Elevate MemorySense Extra Firm Mattress

Save £184.00

From

£675.00

£859.00

Free Delivery

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Sealy Newman Ortho Firm Support Mattress

Sealy Newman Ortho Firm Support Mattress

Rating 4.5 out of 5, from 25 reviews

(25)

From

£355.00

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Nura 40HD 20cm Ultra Orthopaedic Extra Firm Foam Mattress - Single

Nura 40HD 20cm Ultra Orthopaedic Extra Firm Foam Mattress - Single

£174.00

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Argos Pay. 0% interest for 3 years*. When you spend £500+ on 100s of furniture lines.

When you spend £500+ on 100s of furniture lines

British Bed Company The Legend Ortho 2000 Extra Firm Mattress - Double

British Bed Company The Legend Ortho 2000 Extra Firm Mattress - Double

£683.10

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*Argos Pay Representative Example

Representative 34.9% APR (variable), 34.95% PA purchase rate (variable), £1,200 assumed credit limit.

Offers and credit subject to status. 18+. UK only. Terms apply. NewDay Ltd is the lender, Argos Limited is the broker.

Sealy Mellbreak Ortho Plus Extra Firm Orthopaedic Mattress - Single

Sealy Mellbreak Ortho Plus Extra Firm Orthopaedic Mattress - Single

£374.00

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Nura 40HD 25cm Ultra Orthopedic Extra Firm Memory Foam Mattress-Single

Nura 40HD 25cm Ultra Orthopedic Extra Firm Memory Foam Mattress-Single

£210.00

Compare

*Argos Pay Representative Example

Representative 34.9% APR (variable), 34.95% PA purchase rate (variable), £1,200 assumed credit limit.

Offers and credit subject to status. 18+. UK only. Terms apply. NewDay Ltd is the lender, Argos Limited is the broker.

Related categories

Firm Mattresses Firm Double Mattresses Medium Firm Double Mattresses Firm Single Mattresses Soft Mattresses Medium Firm Mattresses Super King Mattresses Single Memory Foam Mattresses Pillowtop Mattresses Silentnight Miracoil Firm Mattresses

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© Argos Limited 2026. All Rights Reserved.

*Argos Pay is provided by NewDay Ltd. UK residents aged 18 and over. Offers and credit subject to status. Terms apply.

Argos Limited is a credit broker and not a lender, introducing Argos Pay under an exclusive arrangement with the lender NewDay Ltd.

Argos Limited is authorised and regulated by the Financial Conduct Authority (firm reference number: 713206), registered office: 33 Charterhouse Street, London, EC1M 6HA). NewDay Ltd is a company registered in England and Wales (company number: 7297722), registered office: 7 Handyside Street, London, N1C 4DA. NewDay Ltd is authorised and regulated by the Financial Conduct Authority (firm reference number: 690292) and is also authorised by the Financial Conduct Authority under the Payment Services Regulations 2017 (firm reference number: 555318) for the provision of payment services.

PayPal Pay in 3 is the trading name of PayPal UK LTD, 5 Fleet Place, London, United Kingdom, EC4M 7RD. Terms and conditions apply. Credit subject to status, UK residents only. Argos Limited acts as a broker and offers finance from a restricted range of finance providers. PayPal Pay in 3 is regulated by the Financial Conduct Authority. Pay in 3 eligibility is subject to status and approval. 18+ UK residents only. Pay in 3 is a credit agreement. Check if affordable and how you will repay. May make other borrowing more difficult or expensive. See product terms for more details.

Klarna's Pay in 3 / Pay in 30 days are regulated credit agreements. Borrowing more than you can afford or paying late may negatively impact your financial status and ability to obtain credit. 18+, UK residents only. Subject to status. Ts&Cs and late fees apply.

Argos Care policies are provided by Domestic & General Insurance PLC, who are an insurer not an intermediary. They have not given you a personal recommendation as to whether this policy is suitable for your needs.