I don’t know where you can turn. But I can give you advice on choosing leather. The most durable is leather buffalo, calf. She can serve more than 10 years. The most affordable are pigskin products. However, over time, the pig's skin is prone to overgrowth, its service life will be no more than 5 years. Make sure that the thickness of leather is the same throughout the product. This applies to the neck, armholes, sections on the sides of the zipper. Since it is there, thin leather is often sutured.