Forget hassling with block foam, sandpaper and glue to customize whitewater or sea kayaks. The adhesive backing of this seat permanently secures in the cockpit to quickly and easily provide superior comfort and support. The seat also encourages a slightly forward posture to help you better engage and utilize a thigh brace. Made from sturdy, thermal-molded foam. Made a bit firmer for handling serious whitewater. Black. 12"L x 13 3/4"W.