it luggage Worlds Lightest Second Generation 22 inch Carry-On Upright EXCLUSIVE The high-density polyester and fiberglass frame are ultra-strong and are 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 trolley system has a friction locking handle and is constructed from a single piece of aluminum and runs down the sides of the bag, leaving the bed of the case flat and crease free Two large front zipper pockets for additional storage of personal items Fully lined interior with internal organizer pockets