Then I clamped the racks together, being careful not to move and get the racks out of alignment. By the time we reached our destination of Morganton, Georgia, it had slid almost all the way off the car and looked like a dinosaur tore it to shreds! But, it does not seem that it will come out easily either, securely fastened. The days of worrying about your cooler exploding are gone! The joints are sturdy. The footbed is really soft and I can feel the little points doing their thing. Just a minor inconvenience though. Heres what I think:Pro:1) obviously small2) GREAT sound quality. Shirt is nice and comfy. I received these as a Xmas gift and I had to return them.