Delsey Luggage Helium X'pert Lite Ultra Light Carry On 4 Wheel Spinner Suiter Upright, Black, 21 Inch Ultra Lite 4 wheel trolley constructed of Twisted Nylon Dobby material backed with vapor barrier for long lasting use The highest level of security and protection is achieved through the exclusive Zip Securi Tech zipper 4x twin spinner wheels with 360 degree rotation assure multi directional rolling and optimal stability Fully integrated lightweight fiberglass fram TSA accepted lock