There wasn't a category for me...it came on my '08 when I bought it used. I thought of it as a selling feature whether I wanted it to stay on (I did) or take it off for a fresh finish.
BTW...other good poll would be what is covered. Mine has front, hood, mirrors, A-pillars, fender tops and up to sunroof. It's the only way to do it as far as I'm concerned. People don't even know it's there unless I tell them because the seam is not in normal line of sight.