All Aluminum Luggage With the strength and durability to withstand rough handling by baggage handlers, the rolling luggage features a heavy-duty aluminum hardshell exterior. Due to the properties of aluminum alloys, strength and durability refer to no cracking, excluding scratches and dents. Note: Aluminum alloy suitcases are prone to scratches and dents when used improperly. If you mind, please choose plastic or polycarbonate suitcases. Zipperless closure, Rubber seals, TSA-approved combo locks, and ultra-smooth spinner wheels ensure your belongings are secure and easy to carry when on the road for business or leisure. It also comes with a transparent protective suitcase cover. Zipperless Closure Aluminum alloy frame, aluminum alloy hard shell, reinforced corners, fixed by metal rivets. Heavy duty industrial design concept to keep your belongings safe. The anti-theft performance of aluminum alloy suitcases is unmatched by zipper luggage TSA-Approved Combo Locks Adopt TSA certified lock (keyless), allowing you to pass customs inspection quickly, saving time. It is recognized in 650 airports in 44 countries that 2 billion passengers use TSA locks every year. You use the password to open the luggage, the initial password is 0-0-0, you can change the password according to the instructions. Ultra-smooth Spinner Wheels Double row, 360 degree rotation, silent, smooth, large rotating wheel design ensures that you can easily push on concrete pavement, blankets, elevator steps. Height-Adjustable Aluminum Drawbar 20-inch carry on luggage: Level 4 adjustment. 30"— 33 3/4" — 37 1/2" — 39 3/4" 25-inch checked in luggage Medium: Level 3 adjustment. 33 3/4" — 37 1/2" — 39 3/4" 29-inch checked in luggage Large: Level 2 adjustment. 37 1/2" — 39 3/4" 20 inch Cabin S Aluminum Luggage 20 inch Carry On Aluminum luggage 25 inch Check In Med Aluminum luggage 29 inch Check In Large Aluminum luggage Size 20 inch 20 inch 25 inch 29 inch Material Aluminum alloy Aluminum alloy Aluminum alloy Aluminum alloy Locking Method TSA combination lock TSA combination lock TSA combination lock TSA combination lock