I use this , no piercing (aarrgghh!), or the ACE wrap that perforeal has talked about, worn around both cock and balls.
The leather one is very comfortable; there’s less bulging with the cockring, but if you want more bulge, use the ACE.
I think the secret of wrapping is to be consistent in doing it, not just now and then when you happen to think about doing it. It also helps while you have it on to stimulate an erection, or a partial occasionally. Keeps you somewhat engorged for a longer time and establishes a “pattern” that just might get locked in.
I’ve told this story before but here goes again. I made very significant erect gains through PE, but my flaccid size didn’t change until peforeal suggested over lunch that I try the wrap technique. It took awhile, months, but I did see a gradual flaccid enlargement and so continued the wrapping. I know that I can go a few days without wrapping and still stay larger but I’ve not gone beyond that out of fear that it will go away. :)
The leather three snap is available, btw, in every adult store I’ve ever been in. But if you decide to order from JT’s, they ship real fast.