Designed to fit both the left & right foot. Small: Men's (6 1/2-8) Women's (5-7 1/2) Medium: Men's (8 1/2-11) Women's (8-10) Helps to prevent serious ankle & foot injury. Aids in recovery of existing ankle & foot injuries. Can be used for any sport or activity by any age group. Faster, easier, and more cost effective than conventional stabilizing tape. Quick, simple velcro design; no tape or laces.