Our 100% polyester canvas with PVC backing is waterproof and perfect for handbag lining, with a true 600 denier weave and an approximate weight of 12oz per square yard or 390g/m2. Our WRC is coated with urethane for extra water repellency, making it easy to sew. There's no PVC backing. You can add iron-on interfacing, such as SF 101, for added stability. Rolls of 18x61" WPC or rolls of 18x58" WRC will be shipped rolled up.