The Again Faster Grips replace expensive athletic tape as the primary way to protect your hands during high-repetition workouts. Solid and durable, they're ready to go in seconds. Slip your middle and ring fingers through the holes, tighten the velcro wrist strap, and go! For sizing, measure from the wrist to the base of your middle finger. X-Small fits under 3 1/2'', Small fits 3 1/2''-4'', Medium fits 4''-4 3/4'', Large fits over 4 3/4''.