Try the custom AI to help you find products that Reddit loves.
I usually recommend people try a Holy Trainer clone. The only real downside of the clones is you will want some sand paper to clean up some of the sharp edges. The upside is they are cheap and you can find out what size rings, etc works for you without spending a bundle. If you end up enjoying it the real ones I think are worth the price. I have worn these for over a month at a time.
This is the nano but there are a variety of lengths with the 5 cage options. If you google (don’t search on Anazon) then take the listing result to Amazon you can find a ton of options. Holy Trainer v4 or HTv4.
Honestly I don’t care fir it but a great starter for cheap to figure out a ton of size shit. I way prefer metal like ternence dot net and they link to Amazin to order.
Here is the link
FYJENNICC V4 Chastity Device Cage Male Briefs Medical Grade Resin Breathable Men's Transparent Underwear (Nano) https://www.amazon.com/dp/B08GM7T3GR/ref=cm_sw_r_cp_api_glt_fabc_MHGP4TG3V9N20NBRFKKD?_encoding=UTF8&psc=1
if you want something cheap and also to help with sizing (which is my suggestion for a first cage), I would look on amazon. I use the nub for this HT knockoff and i love it but definitely start with something you think will fit comfortably. The nice thing is it came with 5 different ring sizes so I could see what i really liked.
FYJENNICC V4 Chastity Device Cage Male Briefs Medical Grade Resin Breathable Men's Transparent Underwear https://www.amazon.com/dp/B08GM7T3GR/ref=cm_sw_r_cp_api_glc_fabc_oCp2FbVSSPSZV?_encoding=UTF8&psc=1