Here in this part of the Northwest the first thing that comes to mind when you hear the word Rockies isnft the Colorado baseball team or the mountains but the surface of our roads. I too have the 3M clear bra for around town, but for road trips I also run a Chrysler nylon bra, because my other cars and truck have numerous rock chips. In fact I even got a rock chip on front bumper on my Crossfire the day I took it over to have the 3M clear bra installed. So far I been very impressed with the durability but I havenft had the 3M material long enough to know if it will yellow in time. However, I have noticed that certain bugs can leave a yellow stain on it that takes some time in the sun to disappear. So far I havenft found anything that will clean of the yellow bug marks immediately and on a white car they stand out, but I would rather live with the stains and not the chips. :lol: