Just read those two recent complaining posts about the air and gravity and I have to state a rebuttal... I've put 70k on my air pure and it is absolutely flawless... No one problem in my two years of everyday driving and interstate highway bliss!
No Velcro but They have skinny little plastic shims that help guide the edges under the molding folds, and the back has a soft, foam line padding surface that grips so they don't slide.