Complete Comfort Front Boot provides-comfort, no sweat, dirt and debris protection.Small: 8.5 - 9.5 in.Medium: 9.5 - 10.5 inLarge: 10.5 - 11.5 inXL: 11.5 - 12.5 inAlso available in Pony size. SASS Wraps not compatible with Pony size.