Waterproof Sheet Protector

GUC Especially for Kids waterproof sheet protector! Keeps sheets dry through toilet training. It goes over the bottom sheet to protect the mattress. The surface is made of 50% cotton and 50% polyester, with a filling of 95% polyester and 5% rayon, and a 100% vinyl backing. Approximate size is 30 in x 34 in (76 cm x 86 cm).