The Genesis pad is buffalo leather? I'm assuming the others are the same or some type of leather/suede. I also agree with Ken about it being too tacky. I bought a piece of buffalo leather off of Ebay and it worked the same at removing oil from the ball. Was a little linty though.
It
might be buffalo leather, then again, it might not. I have not seen any Buffalo missing a 5 inch square of their skin, but that's what I have been told.
I found it to be a bit too tacky at first as well, so I had to change my method of wiping balls after a shot. And mine is a bit linty/stringy as well, but it really works great.