Slumberdown Cotton Comfort Mattress Protector - King size
311/6269£26.00
Bed size: King Size
Check stock
Check stock to see your delivery and collection options:
Sign in or register to save items to your account. Simply tap the heart again to remove.
About this product
At Slumberdown we believe everybody deserves a better night's sleep. The Slumberdown Cotton Comfort mattress protector has been designed to provide extra protection for your mattress. The soft touch cotton cover protects your mattress from sweat and stains extending the life of your mattress. This quilted mattress protector fits to your bed with a knitted skirt suitable for a mattress depth up to 30cm. What's more its easy care which means its machine washable.
- Suitable for king size beds.
- Non-allergenic.
- 100% BCI Cotton cover.
- 100% Polyester filling.
- Secured by elasticated skirt.
- Size L200, W150cm.
- Machine washable.
- Line dry.
4.7
96 reviews
87%
Recommended this product
Customers Say
This mattress protector is praised for its comfort, fit, and quality, especially the elasticated skirt. However, some users reported issues with durability and misleading material descriptions.
An AI generated summary based on recent customer reviews
Each review is verified as authentic by our independent third party and we only publish reviews from customers or Argos Testers who have purchased or used the item. Customers are incentivised to submit product reviews as part of a prize draw.
Mattress protector
Lovely thick comfortable mattress protector with a proper elasticated skirt.
Val, 55 - 64, Claverley, Shropshire
Mattress protector is fine
What can I say - it fitted on to the double mattress fine. It had a nice protective layer to it. Not too flimsy and in my opinion so much better than ones that have straps to fit it with. No slipping on the mattress. It certainly made my 94 year old friend very happy and in his words “it should see me out!” 😁
Poppins53, 55 - 64, Biurnemouth
Great fit
I bought this to replace my old one that had worn out. I'm happy I chose this one because I find cotton much better suited to bedding than synthetics.
Pam, 65 or over, Ebbw Vale
Perfect !
I am really happy with this mattress cover. I have finally found something which doesn’t come off my mattress . Yay!
Iza, 35 - 44, Oxfordshire, UK
Exactly as described
Fits a deep mattress well.
CK, 55 - 64, Surrey
Nice
Fits nice on an 18cm thick mattress, the skirt is better then the corner straps.
Spud, 55 - 64, England, UK
Lovely
Very Comfortable nice
Sema, 35 - 44, Stoke-on-Trent
Deep sided protector
Purchased a couple of king sized mattress protectors to replace my old ones. I am really pleased with the size as enough at the sides to tuck in. Nicely padded and good quality
Auntie, 65 or over, Kent
My second purchase
I already have a mattress protector, needed another for washing. So ordered a second one. My first purchase was good easy to wash and dry and wearing well.
Cat 12, 65 or over, York
Good quality, great price
Cheaper than paying to have old quilt cleaned at laundry
Xmas, 65 or over, Essex
Hello Theo,
I can see that the Slumberdown Cotton Comfort Mattress Protector - King size product details say, 100% BCI Cotton cover. 100% Polyester filling.
Thanks for using Q & A.
Hi Sam
The Slumberdown Cotton Comfort Mattress Protector - Single, has side skirts for mattress's up to 30cm, however this means stretched to 30cm, therefore this would be suitable for a mattress of 16cm depth, any excess can be tucked underneath the mattress.
Hope this helps
Thanks for using Q and A
Hello Nick.
Slumberdown Cotton Comfort Mattress Protector - Single:
This is made in China.
Thank you for using Q&A.
Hi Kate,
Slumberdown Cotton Comfort Mattress Protector - King size
Having checked I can see this is 8.8cm in depth.
Thanks for using Q&A.
Hi Bear
The Slumberdown Cotton Comfort Mattress Protector, is NOT waterproof.
Thank you for using Q&A
Im sick of buying mattress protectors that slip off and end up in a crumpled heap Iv spent a fortune trying to get one that stays in place what makes this one different
Hello Ann,
The supplier has advised the following for the Slumberdown Cotton Comfort Mattress Protector - Single:
Yes, the backing is 100% Polypropylene.
Thank you for using Q&A.
Hello there,
The supplier has advised the following for the Slumberdown Cotton Comfort Mattress Protector - Single:
"Yes, there is no reason why you couldn’t use the product over the top of an electric blanket. We usually say, a protector should go on first as this is designed to protector you mattress giving it a longer life. Then your electric blanket goes on top, finally your fitted bed sheet."
(We'd also advise that you check the electric blanket’s specs too so as to be sure that it’s safe to use with a blanket of this type before considering its use).
Thank you for using Q&A.
The answer is incorrect as at 8 July 2025.
Having bought it today it is the cheap stuff you described.
Betta
Hello.
Yes, the skirt on the Cotton Comfort Mattress Protector - Double is cotton. The knitted skirt keeps your protector secure.
Thank you for using Q&A
Hi Mark.
This quilted mattress protector fits to your bed with a knitted skirt suitable for a mattress depth up to 30cm.
Hope this helps
Thanks for using Q&A
Hi Nat
The Slumberdown Cotton Comfort Mattress Protector - King size is 100% Polyester filling.
Hope this helps
Thanks for using Q&A
The small print
*Prices correct as displayed but are subject to change.
The customer and brand answers you’ll see above are submitted independently. As we don’t review these answers, we can’t take responsibility for anything they may say. The responses from Argos colleagues are accurate at the time of publishing. For the latest info, you should check the product page.