Slumberdown Cotton Comfort Mattress Protector - King size
311/6269£26.00
Bed size: King Size
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About this product
Protect your mattress from everyday wear with this quilted cotton protector that keeps your bed fresh and extends its life. It's made with a soft cotton cover and hollow fibre filling that guards against sweat and stains, so your mattress stays cleaner for longer. The elasticated skirt grips mattresses up to 30cm deep, which means it stays securely in place without shifting or bunching through the night. It's non-allergenic, making it a practical choice if you want a cleaner sleeping environment.
The knitted skirt fits quickly over your mattress and holds firm even when you're moving about in bed. It's machine washable and line dry, so keeping it fresh is straightforward and hassle-free. The quilted design adds a layer of comfort while protecting your investment from daily use. Whether you're refreshing your own bedroom or adding an extra layer of care to a guest bed, this protector works hard to keep your mattress in better condition for years to come.
- 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
127 reviews
86%
Recommended this product
Customers Say
Comfortable, breathable cotton mattress protector with good fit, elasticated skirt, and washable fabric. Some find sides thinner and elastic loose, but overall good quality and value for money.
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.
Very comfortable
Very thick and quilted, thought it was a bit expensive, but well worth the money. Washes well.
Kizziedale, 65 or over
Good priced protector.
Great mattress protector. Exactly what I wanted with skirt to keep it in place so no wrinkles under the sheet, and breathable cotton fabric. Good fit and being washable makes it more hygienic and hopefully extends life of mattress to some degree.
Threepanny
So comfy
So soft & comfy , really like it good value for money
Jules, 55 - 64
Good Mattress Protector
This mattress protector is lovely and thick, nice material, it fits my double bed perfectly, the Elastic could have been a little tighter, as the mattress protector does move a bit as Im a restless sleeper, and creases a bit. But if you sleep soundly and don't move much it will be perfect. But it is a really good mattress proof the whole I would recommend to a friend.
Butterfly2, 65 or over
Not impressed
Bought it as a replacement mattress cover not on really impressed as it’s a lot thinner than the last one but it is under the sheet and not on show. It will do for the time being but going forward I will look at other makes
JB, 65 or over
Very comfortable
Very happy with it, very comfortable and gives great protection
Biddy, 65 or over
Good quality mattress protector.
A comfortable good quality mattress protector. It has a skirt fitting which I prefer.
Enajee, 65 or over
It's a mattress cover.
It does the job it was made for. There's not a lot else you can say really. Seems good quality - time will tell.
FraPa, 65 or over
Good value
Essential part of my bedding, especially for the guest bed.
JQ
Cotton. Great natural product.
This is a lovely cotton breathable matress protection. It stays in place very comfortable.
Tricia
Hello Daisy. The Slumberdown Cotton Comfort Mattress Protector has been designed to provide extra protection for your mattress and is Non-allergenic. We would not be able to advise if this would suit any medical conditions. You may need to seek medical advice before buying. I hope this helps. Thanks for using Q and A.
Hello Gunnerdog,
After checking with our supplier, they have advised for the Slumberdown Cotton Comfort Mattress Protector - King size: ''Yes, cotton fabrics are more breathable than polyester alternatives.''
Thank you for using Q and A.
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
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.