This chastity belt is a more advanced version of the classic KTB chastity belt. It is comfortable while the penis is at rest, but will bite if the penis becomes stiff for any reason. Inside the cage are nasty but blunt spikes that prevent injury, but their markings may well be visible for a few days. That's why this Chastity Cage is an effective way to prevent an erection. The chastity cage also has a removable penis plug with a piss hole. This lockable penis plug cannot be removed without a key.