Its a different material for the outside and inside of the cover. Im not 100% sure on the inside material but its really soft like a kind of suede mirofiber or something. I know if you get water on the inside that it will just sit on it and not soak in... just like the wax on the car lol. You might want to just call FVMC aka Lambo Chicago and get more info on it. I can take a picture of it on the car when I get home. Its in excellent condition. The only thing that ever happened is a small rodent or something got on top of it last winter and pulled a thread out on one of the seams. Nothing significant in the least bit as this has a nice thickness to it. Just thought Id mention it.