The ones I have aren't entirely "leather"..just like, the handles and what not.
I don't think it's real leather either, becuase they're pretty cheap (in price)
Most of them have held up well, I don't use them that often though.
One that I have has a large zipper, and it usually gets caught for some reason
(maybe becuase I don't have any patience to do it up slowly?)
Just make sure the zipper is properly working before you buy!!
Overall, I love the style/designs/textures they come out with!