The Hippychick Tencel Fitted Mattress Protectors are high quality, discreet and 100% waterproof, and they have to be seen and touched to be believed. Feeling the soft material it is difficult to see how something that feels so luxurious can be so practical. Tencel is a naturally hygienic fibre made from 100% biodegradable wood pulp cellulose. The wood used comes from tree farms practicing sustainability and is guaranteed by the European Programme for the Endorsement of Forest Certification (PEFC) quality seal and the international Forest Stewardship Council (FSC) standards label. It is as cool as linen, soft as silk and even more absorbent than cotton, making it the perfect waterproof bed protector.Tencel’s unique moisture absorption capacity draws away moisture and helps you keep cool even on the hottest of nights. Without moisture the growth of bacteria is inhibited. Without bacteria, mould and mites similarly find life more difficult. All this is achieved without the use of added chemicals that otherwise might be harmful to sensitive skin. The polyurethane layer also acts as an anti allergy barrier – further protecting against mites which are a major cause of hayfever and asthma.