A protector around a mattress is a good investment. It protects against small accidents, is easy to wash and provides a snug sleeping environment. Protects the mattress from accidents and spills – and keeps your child's bed hygienic, clean and dry. Your mattress stays dry because a waterproof layer prevents any liquid from passing through. The soft, thin and ventilating mesh is made of 100% polyester ‒ a durable material which is tested, approved and free from harmful substances and additives. A good choice if you are allergic to dust mites since the protector is machine washable at 140°F (Hot), a temperature that kills dust mites. Quick to remove and easy to wash.