3 Piece Set: Set contains a carry-on 20" airline approved luggage, a 24" checked suitcase, and a 28" large luggage. Specifically designed for 24 and 28 inch luggage, the extension layer adds more capacity to maximize your packaging capacity. ABS+PC Material: The utilization of ABS+PC makes the luggage relatively lightweight and portable, showcases excellent wear resistance, possesses a solid shell, can endure a certain amount of external impact, reduces the burden, and boosts travel efficiency. High Quality Accessories: TSA-approved combination locks are robust and tamper-resistant, effectively preventing unauthorized access during transit. YKK zippers ensure long-lasting durability and smooth operation. Four multi-directional silent wheels facilitate effortless rolling and enhanced maneuverability, enabling smooth and unrestricted movement. Aluminum Telescopic Rod: Combining strong, lightweight properties, corrosion resistance, and rust prevention, which makes them more comfortable to use for extended periods of time, all of which prolong the life of your luggage. Sustainability Features: Our luggage is GRS certified and contains 80% post-consumer recycled polyester, effectively reducing the use of virgin materials. This ensures the materials in the final product are genuinely recycled and processed in a more sustainable manner, while minimizing harmful impacts on both people and the environment. WireHot 3-Piece GRS Certified Luggage Set with Spinner Wheels TSA Lock, 20+24+28 Hardside Travel Zipper Suitcase