Invisible Bra is applied to the front using 3M film- only by pro's. Cost me $300 for the SPF including the rear fender rock guards. It is sort of "soft" and will absorb minor stone hits (or heavy bug hits) without marring the paint, like a vinyl bra. I'm told I may want to exchange it for new film after about three years- pro exchange also. I have some pic's if interested. It's sonewhat hard to see the bra film because it's......well, invisible.
