Product Features The suitcase set includes 3 sizes of luggage to meet different travel needs, such as weekend trips and long-distance trips. Luggage set is made of ABS+PC material, which is light and strong, flexible and impact-resistant, and can withstand extrusion and collision during transportation. The surface of the suitcase is covered with regular dot patterns and has a beautiful gloss. The telescopic handle is adjustable and sturdy, suitable for people of different heights. The 360 dual spinner wheels are highly maneuverable and move quietly and smoothly while on the go. 3-Digit TSA Approved Lock: Allows customs to inspect your luggage for customs clearance, ensuring the safety of your luggage. 20 inch carry-on: 13.98 x 9.25 x 21.85", 6 lbs. 24 inch checked: 17.32 x 10.63 x 25.59",8 lbs. 28 inch checked: 19.88 x 12.01 x 29.92", 10 lbs. The 3 sizes can be nested within each other to save space. The 20-inch suitcase does not include expansion function and side handle to avoid exceeding carry-on restrictions. Description HOW TO RESET THE TSA COMBINATION LOCK 1. The lock is set to 0-0-0 at the factory. 2. Make sure the dials are rotated at 0-0-0 or any other code you've set before resetting it. 3. Use a pen or something pointed to press the reset hole adjacent to the dials. 4. Enter your new code by rotating the dials 5. Push the key button once and your code is now set. 6. Scramble the dials and test your new code to be sure the correct one is set.