[3 Piece Luggage Set]: Set includes 20" carry-on(convenient to carry to the aircraft), 24" and 28" checked(Suitable for long-distance travel, hold more clothes, shoes, etc.). The luggage can be expanded to add a larger space capacity. [High Quality]: The luggage set is made of super strong ABS+PC hard shell material, which is lightweight and extremely durable. Features a textured finish that resists scratches to keep your luggage looking great while traveling. [Smooth Spinner Wheels]: Four 360°multi-directional oversized double universal wheels for easy movement. The luggage moves very quietly and smoothly, the best choice for long-term travel and business trips. [Secure TSA Lock]: The side mounted TSA lock gives you security, only you or a TSA agent can easily open the hard shell suitcase while traveling. It is safer and more reliable, giving you more peace of mind. AnyZip's purpose is to be the world's first-class luggage, to accompany everyone around the world. The AZ213 product is a great innovation: the focus is on the perfect combination of ABS and PC, resulting in a shell that is strong and tough. Sturdiness makes the luggage more durable in use, while toughness makes it less likely to break.