Well this whole door thing is finally about wrapped up. I can't even begin to tell you how excited I am to finally use these things. Whether it be cruising through a mud hole and not checking the brakes or running down the road without getting cold. These are made from the kind of material used on a convertable BMW, quality material. They sport a #10 zipper around the window. In addition, they're removable. Velcro was used around the edges, so it can be removed within a minute.