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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

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Home and furnitureHome and furniture
BeddingBedding
Mattress protectors

King Size Mattress protectors

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Waterproof
Silentnight
Anti allergy
Slumberdown

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24 products

Slumberdown Soft and Huggable Mattress Protector - Kingsize

Slumberdown Soft and Huggable Mattress Protector - Kingsize

Rating 4.4 out of 5, from 187 reviews

(187)

From

£20.00

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Silentnight Hotel Collection Mattress Protector - Kingsize

Silentnight Hotel Collection Mattress Protector - Kingsize

Rating 4.7 out of 5, from 889 reviews

(889)

From

£26.00

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Silentnight Bounceback Mattress Protector - Kingsize

Silentnight Bounceback Mattress Protector - Kingsize

Rating 4.6 out of 5, from 637 reviews

(637)

From

£26.00

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Panda Bamboo Waterproof Mattress Protector - Kingsize

Panda Bamboo Waterproof Mattress Protector - Kingsize

Rating 4.7 out of 5, from 370 reviews

(370)

From

£40.00

Free Delivery

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Premium Panda bedding. Through the pioneering use of bamboo, get the best night sleep with Panda. Shop now.

Premium Panda bedding

Through the pioneering use of bamboo, get the best night sleep with Panda.

Silentnight Waterproof Mattress Protector - Kingsize

Silentnight Waterproof Mattress Protector - Kingsize

Rating 4.3 out of 5, from 5625 reviews

(5625)

From

£21.00

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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.

Habitat Waterproof Mattress Protector - King

Habitat Waterproof Mattress Protector - King

Rating 4.7 out of 5, from 446 reviews

(446)

From

£18.00

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Habitat Supersoft Washable Mattress Protector - King

Habitat Supersoft Washable Mattress Protector - King

Rating 4.5 out of 5, from 363 reviews

(363)

From

£18.00

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

Super King Mattress Protectors Mattress Protectors Single Mattress Protectors Double Bed Mattress Protectors King Size Mattress Toppers Cot Bed Mattress Protectors Pillow Protectors Waterproof King Size Mattress Protectors Plastic Mattress Protectors Waterproof Mattress Protectors

Extend the life of your mattress with our king size mattress protectors

A king size mattress protector offers an essential layer for maintaining the longevity and cleanliness of your mattress. This added layer safeguards your mattress by providing protection against spills, stains and general wear and tear, helping to preserve its condition for years to come.

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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.

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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.