Fresh Face in Chastity Seeking Advice and Suggestions

Alright, I’m sure there are plenty of similar threads here. If you know of one, feel free to point me in its direction. It’s all pretty new territory for me; I haven’t done much research beyond what I’ve read online.

To give a bit of context: I’m currently single with no keyholder around, so I’d be handling this alone as my own keeper. Fortunately, I do have a device already—a budget-friendly version of the BON-4 silicone model. Here is where I need guidance:

I can manage putting it on and am okay using the medium ring (which comes in large, medium, and small sizes), and it fits reasonably well initially. However, after roughly 20 minutes, my testicles retract significantly, causing the device to slide right off as if nothing is holding it back.

Why are they shrinking so much? I can’t manage to get even the smallest ring on at all. Is this just a flaw in the cheaper manufacturing of this specific unit, or am I missing something in how I use it?

I’ve always suspected my testicles might be unusual (or maybe not?) because they appear quite small and look like a single lump rather than two distinct balls. Would upgrading to either a CB3000 or CB6000 solve the issue? Or do you have recommendations for other devices?

The internet has left me pretty confused, so any advice would be greatly appreciated! Thanks!

I suspect your ring size is actually correct. The issue might be that the gap between the tube and the ring is too wide for you, which explains why it keeps slipping off. Does this particular device allow you to adjust or tighten that gap?