Protect-A-Bed Absorbent Cotton Terry Staynew Fitted Waterproof Mattress Protector The Absorbent Cotton Terry Staynew Fitted Waterproof Mattress Protector is made from 80% Cotton, 20% Polyester with absorbent sleep surface. It Protects your mattresses from moderate spills and stains. Absorbs up to 1L of fluid on a queen size. Note : Compatible with an electric blanket. Simply layer your mattress protector over the electric blanket, protecting it from spills and stains, along with your mattress. Always check your electric blanket manufacturer instructions. Also comes in a convenient Long Single size suitable for modern Split King Beds. Material & Protector Style Cotton Terry