Rugged high density 1680D polyester fabric. Push button locking retractable handle system. Handle retracts into protective case well when not in use. 360-degree spinners roll effortlessly any way you want them to move. Our 4-wheel spinners are easy to navigate through any airport, providing easy maneuverability and a smooth glide in every direction. Large main compartment for versatile packing. Full length lid pocket and zippered accessory pocket allow for easy organization. Adjustable hold down straps keep contents snug. Expansion feature for extra packing capacity.