@essell
Some shoes have leather in them, in the past it was almost universal that shoes would be made of leather, but with the advent of modern plastics and rubbers most shoes these days aren't made of leather anymore, since leather is more expensive.
Side note, in the past shoes were much more repairable and there were actually people known as cobblers who would make and, get this, repair shoes. Nowadays many modern shoes, especially sneakers, are built in a way that makes them significantly less if not completely unrepairable, which really sucks. We should be able to repair shoes just like in the old days #righttorepair