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

King Size Orthopedic Mattresses

Find your perfect fit with king size orthopedic mattresses designed for proper spinal alignment and dependable comfort. Choose from popular brands such as Silentnight, Argos Home, Habitat, and Jay-Be, featuring memory foam, pocket springs, eco-friendly fibres, and hypoallergenic finishes. Enjoy enhanced support, pressure relief and restful sleep, night after night.

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New

New In(39)

Offers & Clearance

Offers(300)

Clearance(7)

Size

Mattress firmness

Medium(202)

Medium firm(96)

Firm(54)

Medium soft(25)

Type

Pocket sprung(99)

Open coil(44)

Hybrid(36)

Memory foam(33)

Brands

Silentnight(128)

Habitat(80)

Argos Home(63)

Jay-Be(39)

Price

£5 - £10(5)

£10 - £15(13)

£15 - £20(12)

£20 - £25(20)

Mattress depth range

21-25cm(71)

26-30cm(55)

16-20cm(46)

31-35cm(30)

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557 products

JAY-BE Open Coil Foam Free Kids Single Mattress

JAY-BE Open Coil Foam Free Kids Single Mattress

Rating 4.2 out of 5, from 1545 reviews

(1545)

£95.00

Argos Home Devon Essentials Mattress

Argos Home Devon Essentials Mattress

Rating 4.1 out of 5, from 2136 reviews

(2136)

From

£95.00

Silentnight Travis Miracoil Microquilt Mattress

Silentnight Travis Miracoil Microquilt Mattress

Rating 4.6 out of 5, from 3553 reviews

(3553)

From

£189.00

JAY-BE Open Coil Foam Free Toddler Mattress

JAY-BE Open Coil Foam Free Toddler Mattress

Rating 4.5 out of 5, from 295 reviews

(295)

£89.00

Silentnight Memory Foam Rolled Mattress

Silentnight Memory Foam Rolled Mattress

Rating 4.5 out of 5, from 4446 reviews

(4446)

From

£219.00

Silentnight Healthy Growth Kids 600 Pocket Mattress - Single

Silentnight Healthy Growth Kids 600 Pocket Mattress - Single

Rating 4.9 out of 5, from 120 reviews

(120)

£225.00

*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.

Silentnight Middleton 800 Pocket Comfort Mattress

Silentnight Middleton 800 Pocket Comfort Mattress

Rating 4.7 out of 5, from 2615 reviews

(2615)

From

£239.00

Aspire Kids Dual Layer Open Coil Mattress - Single

Aspire Kids Dual Layer Open Coil Mattress - Single

Rating 4.8 out of 5, from 175 reviews

(175)

£110.00

Free Delivery

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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.

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Large (51-60cm) Cushions Silentnight Miracoil 3 King Mattresses Mattress Firm Topper Memory Foam Folding Bed Self Inflating Camping Mat Nursery Fitted and Flat Sheets Duvet King Size 15 Tog 15 Tog Single Airbed Pumps Toddler Travel Bed

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Sell on Argos

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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 not regulated by the Financial Conduct Authority. Pay in 3 eligibility is subject to status and approval. 18+ UK residents only. Pay in 3 is an unregulated 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 unregulated 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.

King Size Orthopedic Mattresses | Argos