The Bob Mackie Four-Wheeler Carry-On Case features 360-degree spinner wheels for extra mobility, smooth and easy movement over any surface. A fully lined interior with and zipper pocket.  A retractable handle system which provides easy maneuverability when extended out from the case. Top and side carry handle that allows you to lift the case with ease and comfort or carry it by hand when rolling isn't an option.  TSA lock, which allows airport screeners to unlock, inspect and relock bags without damaging the lock.