Seeking Guidance and Advice Regarding a Chastity Cage

Hello everyone! I’m new here and have a few questions—I really hope someone can help. My girlfriend and I are exploring her side of things, with me wearing a Chastity Cage (CC). We’ve been talking about it for some time now and bought two CCs from Amazon.

The first one was disappointing; both the cage and ring were too small to fit me properly. I waited a little while before buying my second CC. This time, I went with silicone since we’re beginners and just want to test the waters. The problem is that this silicone version is also too tight. The base opening and the cage part are very narrow; even when completely soft (un-erect), I can’t get more than a quarter of an inch inside. It’s quite frustrating because my girlfriend and I were so excited to start exploring slowly. I’m looking for a CC that fits me comfortably, specifically one where the ring suits my testicles and the cage accommodates my size. Any suggestions would be greatly appreciated. Thanks very much! My girlfriend is slightly older than me (I’m 33). She’s taken charge in our relationship, and we’re both thrilled about this journey:)

Thanks!:)