Most of my cock rings and cages are metal. I first went to a gay sex shop and actually the clerk helped me fit and size with rubber and leather so I knew my exact size. Then he helped me put on the first metal one. I have a large collection of metal cock rings. Some are more for show because they are large and either bright silver or color. I have a small one that I call my performance one that I wear when going to a group party so I don't cum too quickly. It keeps me hard for a long time but does make it hard for me to shoot. I too have to wait for my cock to go down before I can get the cock ring or cage off.
The only time I couldn't shoot was when I tried my wedding band as a glans ring. Reached orgasm but totally dry until I went soft enough to remove the trying and allowed the backed-up fluids to be released. That only happened once - later times the urethera was not blocked. My 40-mm cock rings do not interfere with normal functions but I don't think I can go tighter and still get my testifies through.
Oh I have learned to have different sizes for different events.
All day its tighter so it doesnt fall off at the wrong time being soft. But getting hard and wearing it doesnt come off easily. So I have a next size larger for the times that I will be hard a lot.
I have been shaving my pubic area since the 70s Gradually I started shaving more. In the last few years, I started shaving everything smooth from neck to toes. Only hair is a little on my head, eyebrows and a little or my arms. Wish I had of shaved it all off years ago. I am not very hairy to start with. It is nice to see other having the courage to try it .
I used to shave my cock and balls for years. Now I found a place that does a full Brazillian wax for men! Cock, balls, ass cheeks, crack, and anywhere hairy (under underwear) is now hairless. Doesn't hurt if the esthetician knows what they're doing.



