There are many devices used for CBT and genital bondage… cock rings, cock and ball harnesses, sheaths, stretchers, separators, pouches, parachutes, etc.

Many of these can be created with rope, chain, leather thongs, string, saran wrap, tape, elastic bandages, strips of cloth, etc. Genital bondage serves one or more purposes in SM play.

Confinement!

Confinement may be to prevent masturbation, prevent an erection, or in other ways serve as a chastity devise. But one of my personal favorites is torment! This is when the bondage itself is pain producing. Usually stretching and/or squeezing various parts of the genitals cause this effect.

Various techniques of bondage include wrapping the cock ring area, behind the cock and balls, to pull both cock and scrotum away from the body; wrapping the top of the scrotal sack to pull the testicles down or out and away from the cock and body; and wrapping the scrotum in such a way that the two testicles are pulled away from each other.