These performance cock rings are three rings with three distinct designs but one major purpose: To allow the man to maintain his erection for a longer period of time. A longer held erection means more penetration and stimulation time for both the man and his partner. These rings are made of rubber and can easy stretch to fit over the cock. Each of their designs add a new dimension of pleasure for the woman. The nubs on each of the designs can be used to stimulate the clitoris during grinding, for example. You'll receive three (3) cock rings in each set.