In The Shoe (ITS) Heel Wedges are designed to fit inside cycling shoes to adjust rear of foot tilt. Features: Can be used in either the right or left shoe under the insole at the heel of the shoe Creates 2, 3 and 4 degree of rear foot tilt Work perfectly in conjunction with ITS-F wedges and Cleat Wedges Includes: (10) 2deg Heel Wedges (10) 3deg Heel Wedges (10) 4deg Heel Wedges