As the name implies, a cockring is a hoop made of metal, leather, or rubber, that encircles the base of the penis and/or the scrotum. Once you have an erection, a cockring is used to restrict blood flow out of the penis, helping to control both erection and ejaculation. It also creates sensations of tightness and pressure that heighten sensitivity and the intensity of an orgasm. Oh yeah, one other thing: it looks and feels hot as hell!