CoverGrip Slip Resistant Canvas Drop Cloth 4' x 15'. These slip resistant canvas drop cloths or painter drop cloths are backed with PVC dots, designed to resist slipping on wood, tile and marble floors. Designed for safety, drop cloths in the classic series are made of 8 oz canvas and come in various sizes to accommodate different room dimensions, as well as hallways, stairs and smaller work areas. Lie flat, fold easily and are machine washable and re-usable. The dots down design eliminate confusion and helps keep paint, sawdust, etc. away from floors when moved from one room to the next.