Patent attributes
Substrate comprising a discrete first layer comprising a first surface, an opposing second surface and a polymeric first material, wherein the first layer has a thickness of from about 1 micron to about 1000 microns and a hardness of from about 10 to about 80 on the Shore A scale; a discrete second layer comprising a first surface, an opposing second surface, and a second material, wherein the second layer has a hardness of from about 1 to about 70 on the Shore OOO scale and a thickness of from about 0.001 cm to about 2.0 cm; a discrete third layer comprising a first surface and a third material, wherein the third layer has a hardness of from about 0 to about 90 on the Shore D scale; and wherein the second surface of the first layer is in substantially fixed and continuous contact with the first surface of the second layer; the second surface of the second layer is in substantially fixed and continuous contact with the first surface of the third layer; and wherein the ratio of the average thickness of the second layer to the average thickness of the third layer is from about 4:96 to about 25:75.
