"Designed to add a more comfortable feel to your bed, the Slumberdown Sleep Soundly Anti Allergy Mattress Topper pairs a soft touch cover with a specially treated anti allergy hollowfibre filling. Created to help reduce the build-up of dust mites and bacteria, it is endorsed by Allergy UK for added reassurance. An anti-slip reverse helps the topper grip to your mattress, keeping it securely in place without the need for elasticated straps or skirts. It can also help revive an old mattress and bring extra comfort to temporary sleeping set-ups such as a sofa bed or guest bed. Key features Specially treated anti allergy hollowfibre filling helps reduce the build-up of dust mites and bacteria Endorsed by Allergy UK Soft touch cover Anti-slip reverse to help keep the topper securely in place Material: 100% polyester Machine washable Tumble dry friendly Dimensions Single: 190cm L x 90cm W Double: 190cm L x 135cm W King: 200cm L x 150cm W Care Machine wash at 40 degrees. Please note: Colours shown are as accurate as possible, though may vary slightly depending on your screen settings."