How useful are cock rings? Has anybody used it? Does it really prolong erections? Does it help in better erections? Where to buy cock rings in india.

I never found them so great. Maybe keep an erection a bit, not even sure. They FEEL good and feel erotic, so that's always nice of course. I never did that much with them though. I had two-- a metal ring and another a strap.

I have a couple, the soft ones are the most comfortable and as they all trap blood you will have a huge erection after a few minutes