SeLgurFos Metal Chastity Cage with Dilator Penis Plug and Belt Chastity Device Double Screw Negative Extreme Cock Cage SM Bondage Sex Toys for Men (Leather Belt)

Ill provide the link to the one I use, and it has cut outs for a buckle, so its adjustable like a belt. And if it is too loose still you can add more holes like it where a belt. In the meantime, if you have any sewing skills or access to E6000 Fabric Glue you can put it on, bunch up and mark the Excess, then take off the belt before using Glue or sewing. (I have to emphasize removing it before gluing. E6000 is incredibly strong, and doesnt like human skin, I work as a Haunt actor and some of those MFs have glued costumes to themselves) https://a.co/d/0gwdBxwA