Sturdy, stable, and secure. This box stores enough for my family of four to go camping, visit family during Christmas (extra toys to bring home), and keep our skis if needed. Easy handling does take two people, but I have installed it alone. If you do not have a fairing and are concerned about wind noise, don't be. I have driving a several thousand miles with the just the box and never heard anything. I recommend getting the wall mount for storage while not on the car, it frees up a lot of room and looks killer, too.