Beveled edges release water and eliminate peel up. Hassle Free installation with easy peel and stick (PSA) backing. NSI utilizes the most aggressive 3M PSA available. Dual density Padz are 1/4 inch top layer with an added 1/8 inch softer underlay. The underlayer adds additional shock absorption and helps to spread the load on big landings. Symmetrical front and back sizing. Available with pictured kicktail option at heel. Color is black. Other colors available on special request.