Durable PP Material Construction: High hardness and lighter hard shell made from polypropylene material with featured finish to prevent against scratches, an innovation material in hard luggage industry. Unique streamline design to get your luggage stand out in the crowd Silent & Smooth Multi-directional Spinner Wheels: Benefit from brand new soft TPU and lubricating balls inside wheels, luggage moves very silent and smoothly with 360 rotate double wheels. Luggage passed 100% drop test and walking test (loads 15kg and walks 40km at a speed of 10km/h) for long-term travels and business trips Adjustable Telescoping Handle: Sturdy ergonomic aluminum 3-step telescoping handle allows you to maneuver in tight spaces and provide effortless movement. Smooth ups and downs for more comfortable carrying TSA Lock Security System: Side mounted TSA lock which allows only TSA agents to inspect your bags without damaging the lock when traveling. Zippers are not easy to be pierced by sharp tools, such as pens, that protects your stuffs in luggage and privacy more better. Full-zip interior divider and cross straps for increased packing organization Three Pieces Set: 20 inch carry on luggage is airline approved for staying night; 24 inch and 28 inch check in luggage are good companion for long trip with family or friends Spacious Interior Organization: Features full-zip interior divider and cross straps that help keep your belongings organized and secure during travel, maximizing packing efficiency for all your essentials 3 Piece luggage sets,suitcase with spinner wheels TSA lock, carry on and checked luggage set with adjustable & telescoping handle(20/24/28)