This is the cage I'm currently using: Amazon.com: Chastity Cage. It's not bad, but I don't care for the bulky top and it's too big. I barely fill it out, and when doing anal or something and my dick shrinks it leaves like half of it unfilled so it's too big.
I'd like to get a flat cage, but I'm aware it may not work out or be painful so I'm looking into a getting a nub size one as well. Does anyone have any recommendations for nub size / micro chastity cages on Amazon? It's difficult to tell which ones will actually be smaller as they're usually measured along a curve.
Also the flat cage I was looking at, Amazon.com: Flat Chastity Cage, doesn't have 47mm ring, so I would either have to go up to 50mm or down to 45 mm and am not sure which would be better. I'm guessing 50mm would be safer though.
Edit: I tried the 49 mm ring I have and it's too lose, but I'm worried the 45 mm ring on the flat cage will be too tight, so I'm not sure. I'm not seeing any stainless steel options that come with multiple rings.