A mattress is a significant investment, and protecting it from day one is essential, especially if you have a slimmer mattress that needs a precise, secure fit. Our Waterproof Mattress Protector with 20cm depth is specially designed for mattresses up to 20cm deep, offering reliable protection without excess fabric or bulk.
Crafted with a 100% cotton quilted surface and a generous 120gsm of soft filling, it adds a comfortable layer that enhances your mattress while maintaining breathability. The cotton top helps regulate temperature, preventing heat build-up and supporting a cooler, more restful sleep. Beneath the quilting, a TPU waterproof backing provides a quiet, flexible shield against spills, perspiration and accidental moisture.
The antibacterial finish offers added reassurance for allergy-sensitive sleepers, helping to maintain a fresher, more hygienic sleep environment. Fully elasticated edges ensure the protector sits snugly around shallower mattresses, preventing movement throughout the night and ensuring a smooth, secure fit.
Machine washable and easy to care for, this protector fits effortlessly into busy households. Available from narrow single to super king, it’s a practical yet comfortable way to extend the life of your mattress and maintain everyday freshness. Available in sizes narrow single through to super king, and a great match with our range of pillow protectors.
100% Cotton - Backing 40gsm poly non woven coated with pvc
Machine washable at 40°C. Do not bleach. Do not dry clean. Tumble dry or drip dry. Use a warm iron. Wash colours separately. Wash before use.
Buy with confidence. Under normal domestic use this product is guaranteed for 5 years.
This product is anti allergy, crafted to reduce allergens and create a healthier, more comfortable sleeping environment.
This product is anti-bacterial, designed to fight germs and provide a cleaner, fresher, and more hygienic bed.
Easy to launder, making your life easier. Minimum fuss and maximum time saved.
100% waterproof, designed to provide durable protection to keep your bed dry and comfortable.
| Mattress Protector Fitted Sheet | W (cm) | L (cm) |
| Narrow Single | 75 | 190 |
| Long Narrow Single | 75 | 200 |
| Single | 90 | 190 |
| Long Single | 90 | 200 |
| Small Double 4FT | 120 | 190 |
| Double | 135 | 190 |
| King Size | 150 | 200 |
| Super King | 180 | 200 |
| Emperor | 200 | 200 |
Delivering A Good Night’s Sleep For Free
- UK Standard 48hr Tracked - £2.95, free on orders over £50
- UK Next Day Tracked - £4.95 - Order before 3.30pm Mon-Fri
- EU Delivery - £19.95
- Rest of the World - £75
- Free UK Returns on any unused product(s) in its original packaging and re-saleable condition within 30 days of receipt
- To find out how to get a Freepost returns label click here
What our customers say
Feedback on this product highlights its good quality and the attentive service associated with it. Many users appreciate the overall craftsmanship, noting that the materials feel durable and well-made. While the majority express satisfaction, a few mention minor concerns that slightly affect their experience, though these are not widespread. The product’s performance aligns well with expectations, maintaining its condition over time. Overall, the sentiment leans positive, with recognition of the product’s solid quality balanced by occasional remarks that suggest room for improvement in certain areas.
AI-generated summary of customer reviews
Your Reviews ![]()
Brenda Cann
Sunday, 21 June 2026
1st class service. Good quality
Chris Saunders
, Belledorm
22 June 2026 15:30
Hello Brenda,
Thank you for your wonderful feedback. We are delighted to hear that you received first-class service and are pleased with the quality.
Kind regards,
Chris Saunders
Belledorm
Trusted Customer
Monday, 31 July 2023
The Belledorm Team
, Belledorm
05 August 2023 13:21
Thank you for your wonderful 5 star review of our Waterproof Mattress Protector.
Platinum trusted service award