RIDDER vinyl shower curtains are made of 100% PEVA (or EVA). Due to that they are water•proof. A good material and processing are the basis for a long•life product. Our vinyl shower curtains are reinforced on the upper border and around the plastic eyelets for the shower curtain rings. They are washable by hand and even some of them have extra big eyelets so that you do not need extra shower curtain rings.