The Adrenaline PowerFoot Performance Inserts provide skaters a way to maximize their skate's comfort and performance by eliminating the negative spacing between your toes and the skate's toe cap. By decreasing the negative spacing players are able to provision for themselves better stability & more control over their stride. PowerFoot inserts have included adjustment shims to adjust for player's height, or for skates with larger toe areas. This product is mounted to the underside of the toe cap (inside of the boot, soft foam facing downward).