Adds 1.3cm or 2.1cm to compensate for a shorter limb length when wearing a walking boot, cast or fracture boot Improves uneven gait and balance Eliminates low back pain and hip pain often associated with a walking cast EVENup™ Orthotic Shoe Lift adds 1/2" to 1" lift to compensate for a temporary leg-length discrepancy such as when wearing a walking cast or fracture boot. Easily attaches to shoe of nonaffected limb for improved balance and gait, and reduced body strain. Rubber and hook-and-loop straps hold it in place. Includes adjustable two-layer nonskid rubber outsole. Pro Pack includes five of each size. Fits left or right.