All main closures have lockable YKK zippers. There is one wrapped handle on the back and two wrapped handles on the front so the bag is comfortable to pull along on its three in-line skate wheel rollers. The bottom is protected from damage by three "sled-like" runners and a special vinyl material. Double shoulder straps round out the amenities. This is a great idea for toting around sports equipment, summer camp necessities, and for college students moving in and out of dorms. It's collapsible for easy storage when not in use.