Strong hardshell construction. 8x easy glide wheels for improved stability and handling. Integrated Travel Sentry approved TSA combination lock. Adjustable push button trolley system. Comfortable top and side carry handles. Fully lined interior with mesh divider section and inside pocket. Packing straps inside main section to keep your clothes held in place. Built to last - all Rock products come with a 15 year warranty against manufacturing defects arising from faulty workmanship or materials.