Kaja One funny article... https://www.bbc.com/news/technology-54436575
Okay I still have to ask and I know different men have different shapes but aren't wearers afraid of getting something caught in a train door or something and tearing their balls off ????
Also I agree that male chastity isn't normally as significant as regular chastity. But I agree that it could make sense for your husband to wear during the last few months of pregnancy as a show of commitment, or men who want to stop masturbating to often.
I guess it could also be useful for men who are getting in touch with their more feminine side or transitioning to the feminine. Just don't squeeze the blood out of your balls!