I've found that I have an issue with any sort of cock cage because occasionally, my testicles will contract into my body and slip through the ring. This happens with some force, and there's nothing that seems to keep it from happening. I had a CB-6000 and I had that issue, and now with a Cherry Keeper it continues to happen. The Cherry Keeper has a much more comfortable ring that feels very snug, but when my balls contracted, they slipped through the ring (very painfully) and the ring came free.

Any suggestions on how to prevent this? I feel like this is a physiological issue that may not have a solution, which is unfortunate.