Constructed with a lightweight, 100-percent pure polycarbonate frame and a durable nylon exterior fabric designed exclusively for Victorinox. Aircraft-Grade, one-touch, dual-trolley aluminum handle system locks into three different positions, 94cm (37-inch ), 99cm (39-inch ) and 104cm (41-inch ), to accommodate travelers of various heights. 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 3cm (1.2-inch ) for additional packing capacity. Padded front u-shaped zippered compartment holds a 15.6-inch Laptop. Two quick-access front pockets hold tickets and other essentials. Interior organization includes a large zippered mesh lid pocket and a zippered mesh hanging pocket containing dedicated storage for a lifestyle accessories 4.0 CheckSmart luggage tracking device (sold separately). X-Shaped compression straps cover a greater surface area to keep folded items secure. Top retractable haul handle and bottom grab handle for easy carrying. Integrated id tag for security and convenience. Lockable coil zippers provide superior burst strength on the main compartment and laptop compartment. Custom zipper pulls feature a thumb groove inspired by the Swiss army knife. Travel sentry approved combination lock easily secures belongings and allows U.S. Airport security screeners to open the lock without destroying it and relock it after inspection. The access lock combination recovery program allows you to register your lock combination on victorinox.com And recover it if it is ever forgotten. Covered by the global 10-year limited warranty .