Protect your mattress with all-natural fibres with the Wool Mattress Protector from Hypnos. With a generous layer of natural and ethically sourced British wool, this mattress protector adds a sumptuous comfort layer whilst protecting your mattress. Wool is naturally heat regulating, helping you keep cool in the warmer months, and snuggly warm through the winter. Both hypoallergenic and dust mite resistant, you can get a fresh night's sleep again and again. The soft cotton cover means you can machine wash your mattress protector. Backed by a 1 Year Guarantee. Free Next Day Delivery.