The shape and ergonomics of this bag is perfect. Very durable, great size, and plenty of storage for my traveling. I never check this bag, as it fits well overhead, including the small charter planes I've been on via SkyWest and Southwest. The wheels are smooth, and the buckle clips provide very good security and cinching for the bag. The dividers inside the bag are very essential so clothes don't shift, and you can sort your s***. Highly recommended, and it's badass looking.