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Pure Cotton Extra Deep Mattress Protector

Product code: T351800M

Crafted from pure cotton, this extra deep mattress protector adds a wonderfully soft layer to your bed while offering essential protection. The naturally breathable fabric creates a more comfortable sleeping environment, while the generous depth ensures a secure fit that accommodates thicker mattresses. Designed to preserve your mattress from everyday wear and discolouration, this practical and machine washable protector helps extend the life of your bedding investment.

M&S

Online only

Pure Cotton Extra Deep Mattress Protector

€39 - €59

Colour

Size

Also available in: Extra Deep Protector
Free standard delivery over €75, otherwise €4.50

Reviews (467)

4.5

72% Recommended this product

Mentions
01 November 2026EmmaB001

All round good purchase

Originally posted on marksandspencer.com (UK)

Good quality, is extra deep, good value, works recommend

Helpful?

01 November 2026BarginHunter60

Great quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely mattresses protector. Hopefully it'll do the job as always. Just an upgrade from my old one, thank you 😊.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

31 October 2026Highlightlover

Very pleased the quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

The quality was good but actually rather oversized never had a problem before with size for a king size bed.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

30 October 2026wineinsummer

Good cover

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

This does what it says and covers our thick mattress well. It could be a touch thicker though.

Helpful?

29 October 2026Heart64

Worth the money

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

The cover was worth the money beautifully made , fantastic quality.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

28 October 2026mjtmjt

Great quality!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Feel like my new natural mattress is actually protected naturally now!

Reviewer Ratings

Comfort

Good

Helpful?

Reviewer Ratings

Comfort

Good

24 October 2026MLB52

Nor usual quality

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

The cover is a bit lumpy and doesn’t quit cover top of matress m baking it slip to side. . May try to return

Reviewer Ratings

Comfort

Fair

Helpful?

Reviewer Ratings

Comfort

Fair

18 October 2026Jaffabud

Really good all cotton product

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Really nice product, washes well, great size with dwwp sides. I managed to buy with bedding discount applied which meant the price was so good for a quality product. I react basdly to other more plastic type materials sometimes found on these covers. So all cotton has been great for me, no synthetic fibres.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

28 September 2026Mba68

Washes very well

Originally posted on marksandspencer.com (UK)

Excellent quality and all cotton is just the thing for me

Helpful?

30 August 2026DevonBuyer

Excellent product ….

Originally posted on marksandspencer.com (UK)

This is exactly as titled and is the third one I have purchased over the years! Excellent quality and size … dee sides are indeed deep and fit a ver deep mattress including topper! Pure cotton is a bonus plus it washes well if you have a machine to take it!

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

29 August 2026HellsBells28

At last I found one

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I spent ages hunting for a matress protector that was cotton and not made of synthetic fibres with a polypropylene waterproof lining. Thankfully I found this and couldn't be happier. Now on the look out for one for a small double for my son's bed. Comfortable and sleeping far better in natural fibres.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

26 August 2026dikosh

All cotton, love it

Yes, I recommend this

It's the only mattress protector I could find in Ireland that is both sides cotton, with cotton waddling, great quality, worth the price

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

24 August 2026Becs6464

Good quality & size

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Really great - we have a deep mattress and a topper on a king size bed which is about 12 inches (30cm) in height total, and this fits over it with ease. Really nice quality too. Very happy.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

24 August 2026Rich5

Beautifully made and excellent fit.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

This protector is an excellent cover for a new mattress topper and mattress in fabulous quality 100% cotton.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

19 August 2026Urfussy

Does the job

Originally posted on marksandspencer.com (UK)

It protects the mattress well, good fit for the bed.

Helpful?

17 August 2026Joshuaretriever

Great buy!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Really lovely mattress protector. Thick and comfortable and doesn’t slip.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

15 August 2026JAN BP

Good value

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Excellent product.Cool comfortable mattress protector at a good price.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

08 August 2026Anonymous6789

Lovely Deep Mattress Cover

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Arrived the next day. Has plenty of padding so is comfortable to sleep on. Fits easily over my mattress.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

06 August 2026Sad26

Cool cotton

Originally posted on marksandspencer.com (UK)

Very oversized presumably to allow for shrinkage. Otherwise ok and benefit of being cotton. Fully elasticated which holds the fit.

Helpful?

23 July 2026Heddles

Nice - poor presentation

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Nice product - does the job. I didn't like the open packaging, seemed unhygienic to me and not the eay to present a new product to a customer.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

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