Sorbothane¨, a one-of-a kind visco elastic polymer, has been medically and scientifically proven to be the finest cushioning material available today . Kick-Eez pads reduce more recoil and do it better than any other pad. Less recoil reduces flinching, eases sore shoulders or cheeks. By reducing the rebound effect of the first shot, second shots are quicker and more accurate. Pad will not "bottom out" as other materials tend to do even after thousands of compressions. This pad has a concave back and was designed especially for "Fixed Position" trap shooting. It has horizontal ribbing on the face to futher increase stability.