I bought one from California Car Cover back in 1998 when I painted my truck black lacquer. I believe it is the "Dustop" version, designed for indoor use. All I can offer is it fits perfectly, doesn't scratch the finish and still looks like new, although it has probably spent as much time in the bag as it has on the truck. While the fit is very nice they aren't cheap. For outdoor use a different material selection would be preferred.
http://www.calcarcover.com/cover_find2.aspx
Here's what it looks like installed. I don't have any photos showing the back.