To determine the correct size of Versa Gripps that you need, please wrap the tape measure all the way around your wrist (directly over your wrist bone). The size of Versa Gripps is not determined by your hand size but your wrist circumference. Versa Gripps are designed to fit securely (not too tightly) around the base of the weightlifters hand. When worn with a proper fit, the user is able to easily rotate them around to the back of their hand when they are not in use. They are not designed to fit tightly around the wrist while doing a pulling exercise. Versa Gripps will not damage the hands or wrists by over-tightening the way that a strap would. They will not restrict blood flow, movement, nor will they damage nerves.