The Complete RecoveryPump System Rapid muscle recovery for serious athletes. This medical grade sequential compression system delivers optimal pressure and sequence for every day muscle recovery. The RecoveryBoots massage muscles to help reduce swelling, soreness and fatigue. Easy to use- Simple on/off switch. No complex user manual. Measure Top of Leg to Floor in cm: X-Short 75 (&lt;75 cm) / 5'3" & under; Short 85 (75-85 cm) / 5'3" - 5'7"; Medium 95 (80-95 cm) / 5'7" - 6'; Long 105 (90-105 cm) / 6' - 6'4"; X-Long 115 (&gt;105 cm) / &gt;6'4" For use by people in good health, Medical Grade Equipment available for use at home or on the go