Chastity device discussions and reviews discussion

I’m trying to determine whether standard base ring sizes in this industry are incorrect, or if I just happen to be a bit unusual. For more than twelve months now, I’ve been working out my correct measurements and have tested five separate devices. The closest match has been the 2.25” X Large ring for the CB 3000 model. However, even with that fit, I begin feeling nauseous after just a few hours of wear. Does this indicate it is too tight? Should I push through the discomfort? When I switch to a 2” device, my balls and penis turn blue within minutes. Based on what I’ve discovered, they are practically the only brand offering a 2.25” size. There aren’t any silicone alternatives yet, though I’d love one. Aside from this issue, I consider myself fairly average in other dimensions, with about 6 inches of length and so forth. Why don’t more brands produce devices with larger A rings?