Contour Lock is one of our most versatile pads and can be used with all rug types and styles. With smaller rugs and runner rugs, Contour Lock will add a layer of cushioning without the bulk of a thicker pad. With larger rugs, Contour Lock will combine moderate cushion with a strong gripping power. Contour Lock, like all felt and rubber rug pads, work really well with low pile rugs, such as flat weaves. Contour Lock also works well with wool, tufted, knotted, and hooked rugs.