Not sure if anyone else is having this issue but, The space between the "tube" and the ring the way the Nano is designed is pretty big. I have had it on for a total of 10 days since receiving it and today on the couch my ball figured a way to slip through and the thing fell off into my pants with my kids grandma right there This had been worrying me and now it happened. The 40mm ring is really comfy I could take a smaller one but for $50? Anyway, I was able to put the ring into hot water to soften it, assemble the device with the lock, then push the ring a cm toward the tube, then run it all under cold water and effective double the "snugness" of the whole thing...Sorry I don't have before and after pics but it worked really well and really easy if anyone else is concerned about security of their nano.
you might be able to fit a knock off ring on there. If it works you could order one of those, im sure it would be much cheaper
Im not familiar with your model. I guess i was thinking all of them use the same rings including the htv2?
I can’t thank you enough for that tip. Since it is a resin material I was able to customize the ring by soaking it in hot water. I was between two sizes and with a bit of tweaking we got it perfect. My wife and i thank you!! No more testicle escape. They can be sneaky guys can’t they. Never had mine drop off in front of the family though.