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A chastity device commonly used by modern men is the chastity cage, which is often called a chastity lock on the Chinese Internet. They are used almost exclusively as sex toys and BDSM paraphernalia. A chastity cage wraps directly around a man's penis, making it impossible or uncomfortable to have an erection. When a man is sexually aroused, a chastity cage prevents him from engaging in sexual intercourse, masturbation, oral sex and other sexual activities involving the wearer's genitals. Chastity cages can be used with sex toys such as CBT.
Most chastity cages consist of a clasp located behind the scrotum and a penis cage that holds the penis in place, with the two pieces held together by hinges or pins. The front end of the chastity cage is perforated to facilitate urination. With the ventilation holes, it can be worn and cleaned for a long time. The design of the penis cage prevents the penis inside from being directly stimulated with hands and fingers. The flaccid penis is inserted into the cage and held at a downward angle so that erection becomes uncomfortable or impossible. There are chastity cages that are designed to be extra short, which squeezes the penis into the cage and restricts its erection compared to a regular chastity cage.
Most chastity cages are designed for long-term or indefinite wear and usually include a lock that is locked by a key. The clasp and penis cage are usually held together with a metal or plastic lock cylinder. When the device is locked, the testicles are trapped in the gap between the ring and the penis cage, which is narrow enough to prevent the testicles and penis from being pulled out.