Cock ring sex toys (also known as a penis ring) are primarily used as an aid to sexual intercourse. Penis rings are designed to fit snuggly around the base of the penis shaft and offer a variety of functions. A vibrating cock ring enhances the penis's natural capability by adding vibrations and some form of attachment that massages the clit. It is often used to stimulate the clitoris during partnered love making. Cock rings are often used as a method of delaying ejaculation by constricting the flow of blood into the erect penis shaft.