Unbelievably lightweight with maximum packing capacity for all of your traveling needs. Everlast rip stop poly with vapor barrier backing and stainguard coating for long lasting use. Protected all terrain wheels permit a smooth, easy roll over all surfaces. Integrated flex frame with fiberglass reinforcement allows the bags to be lightweight and strong. Industrial grade aluminum recessed locking trolley handle with easy access push button to lock and release hidden in an easy access pocket.