★The suitcase shell is made of ABS+PC material, which is sturdy and durable, offering excellent impact resistance and toughness, and can effectively withstand collisions and wear during travel. The high-gloss surface and gradient color design are stylish and eye-catching, making them easy to identify at baggage claim.★Suitcases with dual wheels is stable and flexible, pushes smoothly, and is comfortable and easy to control. Whether on bustling streets or in busy stations and airports, it can be easily maneuvered.★Equipped with TSA-approved 3-dial lock, only customs officers can open your luggage with a special key. The handle is made of high-quality materials, sturdy and durable, and can be flexibly adjusted according to your height, providing you with a comfortable grip experience.★The 24-inch and 28-inch suitcases are expandable. Simply unzip the expansion zipper to expand the suitcase to fit everything you need and more souvenirs. The suitcases can be nested inside each other to save storage space.★Size Reference: 20-inch carry-on 15.6 x 8.3 x 21.7", 5.62 lbs. 24-inch luggage 17.3 x 11 x 26.2", 7.94 lbs. 28-inch luggage 19.7 x 12.2 x 30.1", 9.59 lbs.