Constructed of 100% Polycarbonate that is lightweight and durable; built to withstand impact and absorb shock Dual Density, double-spinner wheels assure a stable base with multi-directional rolling with zero weight on your hand for easy travel Two TSA accepted combination locks to keep your items secure; USB port that allows you to charge your electronics on the go (powerbank not included) Interior includes lined divider with a large zippered mesh pocket and tie down straps, plus a blue tooth tracker pocket (tracker not included) Built to last and backed by a 10 Year Manufacturer's Warranty