Keeps things together and secure. Beautiful shoe and extremely comfortable. that i am sure is only because i was being extra careful because it was a rental car and i wasnt sure exactly how i wanted to secure it to the side roof rack railsi like that fact that this LED kingdomus rooftop cargo carrier bag can be used with or without a roof rack or in the bed of a truck-all of the necessary hooks and straps for whichever use option you choose was contained in the boxi ended up storing 3 medium sized luggage, a duffle bag and some other oddly shapely items and had extra room Occasionally, I get a high pitched background squeal, which I suspect is also a result of the poor connection. Strange business plan but i guess it works for them. THESE "QUINCY" BOOTS ARE SO COMFORTABLE. I got the mocha fun style and black traditional black straps. I plan to get some rubber mats though. Not a huge issue for me . I bought the black/orange version because I had been intending to use orange as the accent color on my new Santa Cruz Chameleon, which is equipped with a Fox Rhythm 34 fork.