An ultra-spacious main compartment makes this the ideal bag for an extended getaway or business trip. Through innovative construction, traditional framing is replaced with highly durable, pure polycarbonate. Aircraft-grade, one- touch, dual-trolley aluminum handle system locks into three different positions, 37Inhes / 94 cm, 39Inhes/ 99 cm and 41Inhes / 104 cm, to accommodate travelers of various heights. Dual-trolley handle system also allows you to adjust to the ideal handle position when transitioning from pushing the bag upright to pulling it on two-wheels. Four premium, 50mm Hinomoto wheels ensure smooth roll across any surface and provide 360 Degree, zero weight-in-hand maneuverability. Spacious main packing area expands 2Inhes (5 cm) for additional packing capacity. Interior features a zippered mesh pocket and compression straps that stretch to secure folded items. Removable drawstring bag allows you to separate shoes from clothing. Exterior front u-shaped pocket conveniently holds reading materials and travel documents. Integrated ID tag for security and convenience. Lockable YKK Racquet Coil zippers provide superior burst strength. Travel Sentry Approved combination lock secures belongings and allows U.S. TSA screeners to open the lock without destroying it and relock it after inspection.