Have you considered making one? It’s very simple to do. I bought a rein, a dog collar (for the buckle) and a pack of Chicago screws at the local tractor supply. I took the buckle off of the collar and attached it to the rein with a couple of Chicago screws and then I made holes to fasten the belt. This is by far a lot heaver belt than most I’ve seen and will last for years. I made mine due to the fact I had a hard time finding one to fit me. I took about an hour to make.
Thanks
J.