Try the custom AI to help you find products that Reddit loves.
A flat cage might work:
Stainless Steel Flat Chastity Lock for Men Chastity Device Penis Lock Restraint Protection Cage Ring Male Device Belt Underwear Clothing Sunglasses 40mm 45mm 50mm (Color : 35MM+, Size : M-45mm) https://www.amazon.com/dp/B08F3GJSC9/ref=cm_sw_r_apan_glt_fabc_R8XPNGVG19V4NTQK3PES
If not, some of the other comments might be worth looking in to.
yes it is very comfortable! i got it off of amazon; here’s the link https://www.amazon.com/Stainless-Restraint-Protection-Underwear-Sunglasses/dp/B08F3GJSC9