Chastity and orgasm denial discussion

I’m preparing to buy two different cage models from DHGate so I can experiment, as this is my very first time.

Sizing the A Ring has been a bit of a puzzle for me. The string method isn’t working well—I keep getting varying results that seem to run large (50mm or bigger).

Recently, I discovered a curtain ring with an inner diameter of 45mm. It’s slightly tricky passing my member through it, but I can manage now. It fits comfortably; I can slip a finger between the ring and my body without issue, yet there are no signs of it slipping off, so this seems like the right choice.

Style #1 (which I’ve already ordered) offers solid rings in 40, 45, and 50mm options. I selected the 45mm.

Style #2 features a hinged ring available in sizes 38, 43, 48, and 52mm. My decision is between the 43 or 48mm.

What do you think? Since the 45mm feels comfortable with room for a finger, I’m leaning towards the 43mm.

Any advice?

Best, Nigel