Finally, an area rug pad that performs as well on wall-to-wall carpet as it does on hard surfaces. With two different thicknesses and twice the number of uses, UltiMat and OptiMat are the ultimate pad. Place the reverse waffle “tentacle grip” side face down on hard floors and you have more gripping power than any other pad. Turn UltiMat or OptiMat over – rubber side up – and you have a pad that keeps area rugs securely in place over wall- to-wall carpeting. The surface is specially treated to provide extra grip and prevent fuzzing and fraying. UltiMat is made with 28 ounces of fiber and 20 ounces of washable rubber and 5 ounces of latex face coat per square yard. OptiMat has 22 ounces of felt and 16 ounces of non-washable rubber per square yard with a heat fused face.