Acock ringorcockringis a ring worn around thepenis, usually at the base. The primary purpose of wearing a cock ring is to restrict the flow of blood from the erect penis in order to produce a strongererectionor to maintain an erection for a longer period of time. Genital adornment is another purpose, as is repositioning the genitals to provide an enhanced appearance.
Cock rings are also called C rings, penis rings, or shaft rings. When used in cases oferectile dysfunction(ED), they are known by various other names, such as erection rings and tension rings.
Cock rings worn just behind thecoronaof theglansof the penis are known as glans rings, head rings, or cock crowns.
A ring that is worn around the penis andscrotumis also usually called a cock ring but is sometimes referred to as a cock and ball ring.
Rings that are worn just round the scrotum, in order to hold thetesticles, are usually calledtesticle cuffsor ball stretchers