When I read the reviews about this bike rack I was concerned that it would be difficult to attach to the hitch. Plus, it has sweet gears of war bling on it! My one thought on this is that the zipper should zip in the reverse direction -- on mine, up is closed. -Built-in controls. I was disappointed that half way through our trip, a corner ripped. True to fit. other than that the slipOns are very cute my son loves them n if he is happy I am happy ????. Not enough arch support. A little challenging to get the straps in place but once they are its not moving. I feel what Ive outlined nudges my overall experience from a 4-star to somewhere between a 4.