The high-tech polyester and fiberglass frame is ultra-strong and built for optimum strength while maintaining a light weight packing case * Corner mounted ball-bearing wheels are connected directly to the frame for smooth and stable rolling * The push-button locking trolley system is constructed from a single pieces of aluminum and runs down the sides leaving the bed of the case flat and crease free * Large front zipper pockets for additional storage of personal items * Fully lined interior with shoe and organizer pockets