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FYJENNICC Lightweight Premium Chastity Device Medical Grade Resin Male Briefs V3 Transparent (Standard) https://www.amazon.com/dp/B07QWZMZ7W
Never thought about the ice thing, I’ll give it a go. Ty
Here is a good affordable one available in many sizes:
Even comes with a small sanding pad to smooth the sharp edges, and the "cabinet lock" style lock is the best over padlocks.
I really like this knock-off. It took a while to arrive but it is well constructed and I wear it a lot (for two weeks at a stretch). You need to sand the edges of some of the plastic pieces where they are sharp, but they know that and include a circle of sandpaper/emery board to accomplish that. I like this especially since it uses a "cabinet lock" and not a padlock, so there is no clinking around of a padlock as you walk, etc. Comes in Standard (linked), Small, Nub, Nano and Maxi all accessed from the same page.
I got it from here: