The most suitable material: ABS material, durable and light hard shell, with texture finish to prevent scratches. The upper beveled edge design increases the toughness of the trunk. The most trouble-free detail: TSA lock, which only allows TSA agents to check your luggage without damaging the lock. It is equipped with a hook on the side, which can hang hand-held packages. Fully lined interior lace up and large mesh zip pocket make it easier and more orderly to pack clothes. Embedded TSA locking system, double anti-theft zipper design, safe and secure. 360 rotator double wheels: four 360 silent rotating wheels can make the luggage move freely. Regardless of the direction, these wheels can keep the trunk upright when pushing, pulling and dragging in any direction. It is your best choice for business travel, air travel, homecoming, domestic and foreign travel. A set of three sizes: three sets of luggage, including 28-inch large luggage box, 24-inch medium-sized luggage box, and 20-inch carry-on luggage box. Meet the needs of different travel days. Space saving: This three-piece suitcase can be stored with each other from small to large, which greatly reduces the occupied area and saves costs