I guess the SRD mesh are that type of stuff or at least seems that way to me.

At one time I decided I would collect 1 strop from every critter that ever walked crawled or swam on this planet. I reckon I had about 25 strops all different. I've since gotten over that and pretty much gave most of them away. These days I have probably 10 stops half vintage the rest new and all pretty conventional leather either cow or horse.