So I recently got a CB6000s and have meddled around with all the combinations of spacers and base rings. I found that the largest base ring that came with the cage and the second largest spacer seemed to have the best balance of comfort, snugness, security, and looseness, but after a few minutes my balls get cold even when flaccid. They don't discolor, they just get cool to the touch. I figured that the base ring might have been a bit small, and seeing as it was the largest one that came with the chastity device, I ordered the extra large rings from the manufacturers, but even then, any ring where my genitals don't slip right through, my balls get cold, and using the largest spacer, my balls slip right between the base ring and the cage.
I was really looking forward to wearing the chastity belt for longer periods of time, but after doing some reading here and on other sites, I'm a bit worried that the coolness I feel could have long term effects on my testicles.
My balls are quite high hanging, I have a small scrotum and my left testicle had an operation to reverse an undescended testicle about a decade ago, so could that be the reason why I can't get my CB6000s to fit comfortably? I was also interested in the Holy Trainer v2 Mini, so would that device give me the same problem as the CB6000s?
Cold balls in the CB6000s
Re: Cold balls in the CB6000s
Ask for an egg cosy for Christmas. 
That will leep them as warm as toast... Seriously, though, is this your first device or just your first CB6000S? You'll probably find your balls get a bit cool to start with anyway, but I expect they'll perk up after a day or so and warm up again. That was my experience anyway.
That will leep them as warm as toast... Seriously, though, is this your first device or just your first CB6000S? You'll probably find your balls get a bit cool to start with anyway, but I expect they'll perk up after a day or so and warm up again. That was my experience anyway.