Dale Dear Dale, A cock ring is one of the oldest mechanical sex aids used for sustaining an erection for a longer than ordinary period.
Some men say they enjoy the 'pressure' that cock rings afford.
Metal or latex rings are placed in position by first inserting one testicle through the ring, followed by the second testicle, and finally the flaccid penis is pulled through. The penis must be flaccid when putting on a metal ring. Rubber rings are sometimes used under the glans for penile stimulation but are removed for intercourse. Leather snap-on rings are placed around the base of the penis below the testicles and are adjustable in size, depending on the snap that is fastened. This is one of the safer cock rings for beginners because it is easily removed.