3'x5' Rug-Chek 100% All Natural Rubber Non Slip Rug Pad for Hard Floors and Exclusive Rug Pads for Less(TM) Custom Cutting Rug-Chek contains actual 100% Natural Rubber-Not like other rug pads with holes that are made of plastic with adhesives and chemicals Rug-Chek naturally prevents slipping and is excellent for use under all types of area rugs, thick or thin Rug-Chek is untreated, natural rubber that is safe for all floors. No marking or staining of floors. Rug-Chek does NOT leave its mark on the floor like other waffle design rug pads Rug-Chek is a made in USA in a full 1/8 thick and besides preventing slipping, it provides a layer of comfort as well Actual size is 3'x5. Rug pads should be slightly smaller than rug, see product description for free Rug Pads for Less(TM) custom cutting if necessary