WATERPROOF AND BREATHABLE: This mattress protector incorporates a polyurethane membrane that makes it waterproof and breathable, that is to say, integral protection against liquids while allowing air to pass through, providing a fresh and hygienic rest all year round. Ideal protector for families with children and pets. 100% BAMBOO: This mattress cover is made with 100% Bamboo terry fabric, a fabric of great softness, absorption and natural freshness. ECOLOGICAL AND SUSTAINABLE FABRIC: Bamboo is one of the fastest growing plants on the planet, regenerating quickly after being cut down, which is why we can say that it is a 100% natural, biodegradable and ecological resource. EASY FITTING: This protector is easy to fit as it fits like a fitted sheet.