Small to fit free-style blade 7-8.25 (very tight fit, not recommended), dance blades 8 to 9 1/18

Medium to fit free-style 8.25 (fits but not recommended for walking, too loose) - 10.25, dance blades 9 1/2 to 25

Large to fit free-style blades 10 to 12, dance blades 11 1/4 to 26