Made of 100% polycarbonate hard-shell, which is the most durable material for hardside luggage. Unique diamond-cut texture finish prevents abrasive scratches and finger prints. Patent-pending T-Cruiser handle system allows you to maneuver your bag with ease. The downward curve of the handle fits the natural position of your hand, thereby minimizing discomfort or fatigue. The double tubes of the handle system maximize the interior space for packing and still allow for a 2nd bag to be carried on top. The push-button mechanism and multi-stage locking feature allows you to adjust the height of the handle to maximize comfort. Patented Dual Cyclone Spherical spinner wheel system provides wide wheel bases for better traction and stability. Each wheel features a 5mm shock-resistant material that assures smooth maneuverability and quiet rolling experience. Each half of the Dual Cyclone wheel can move independently in the same or opposite direction, allowing you to roll or spin your suitcase effortlessly over uneven and smooth surfaces. The four multi-directional Dual Cyclone wheels allow the suitcase to roll upright, so there’s no weight on your arm or shoulder. Expansion gusset boosts extra packing capacity by 25%. Top, side and bottom carry handles for easy lifting. Riveted corner guards enhance overall durability. Imprinted fully-lined interior with two center dividers. Built-in TSA-approved combination lock offers extra security. 21” carry-on spinner features a built-in USB port and interior power bank compartment that provide quick connection to your portable electronic device for a quick charge. Power bank compartment measures 9”W x 4”L x 1”D. (Power bank not provided) Industry-leading Traveler’s Choice quality is backed by a 10-year manufacturer’s warranty. 21” SPINNER UPRIGHT Exterior Dimensions: 21”H x 14”W x 9.5” ( 2”) D (8.2lbs) Interior Dimensions: 19.75”H x 13.75”W x 9.25” ( 2”)