Hardside (Polycar) - Shell material is made of injection molded polycarbonate, a highly impact-resistant plastic that is strong and lightweight. * Spinner Wheels - Four wheels...zero effort, four multidirectional spinner wheels allow 360 degree upright rolling in multiple directions so there is no weight on your arm. * Retractable handle - Provides easy maneuverability when extended out from the case, and stores neatly inside when not in use. Locks in place in both the fully extended and stored positions for secure traveling. * Top carry handle - Allows you to lift the case with ease and comfort, or carry it by hand when rolling isn"t an option. * Cross straps - Secure the contents of your luggage to help prevent shifting that can cause damage. They also help keep the contents of your luggage organized.