Protect your mattress and enjoy fresher nights with this anti-allergy topper that's been specially treated to fight dust mites and bacteria. It's filled with fibres that carry Allergy UK approval, so you'll get a cleaner, more comfortable sleep surface that works with your existing mattress. The topper fits super king beds and adds cushioning that helps keep your mattress fresh and protected. Elasticated corner straps hold it securely on mattresses up to 30cm deep, which means it stays in place throughout the night. The fitted design attaches easily and the straps keep everything secure without shifting or bunching. It's machine washable and tumble dryer safe, so you can refresh it when needed. The topper arrives vacuum-sealed to keep it fresh and compact during delivery, and it'll take around 24 hours to regain its full shape after unwrapping. Whether you're protecting a new mattress or refreshing an older one, this topper delivers anti-allergy protection that helps you sleep more comfortably. Suitable for super king beds. Size L200, W180, D3cm. Cover made from polyester. 100% Polypropylene reverse. Polyester filling. Fitted. Secured by elasticated corner straps. Anti-allergy. Anti-allergy. Cover is machine washable and suitable for tumble drying. Contains a biocide to help protect against bacteria and dust mite allergens. Active substance: Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride.