This is a waterproof box spring sheet. It's a single size. I bought it at Nitori and have been using it for about a year. There are no major scratches, but there is some pilling, wear and tear, fading, and stains. I'm selling a set of two. Please consider them for replacements, etc. Please understand that these are used items. *I will clean them as much as possible at home, but there may still be some small stains. #Nitori #MultiSuppori #BoxSpringSheet #Waterproof