Introductions discussion

hi there, I’m taiter. right now i am looking for a chastity belt large enough to fit my boyfriend’s penis. so far i have purchased two and they are both too tight. the first one slipped down over his testicles and cut off their blood flow, turning them blue. with the second one he wore it for 24 hours and it caused bruising and pinching on his penis. I found both of these listings on ebay but was hoping someone could suggest a belt suitable for men who are well-endowed.