so I'm confused ( as usual ), I read someone mentioning the sizes "there was a 2.5", 3.5", and 4.5" version..." and am wondering what it means. I have a standard 99' VX with the Rocarro seats, should I go measure the width? I would buy a pair for the $50, if the shipping wasn't outrageous.

Also, there seems to be another thread regarding these... our we double posting?