Upgarde 100% Polycarbonate (PC) Shell – Outperforms ABS in Every Way: Full PC suitcase absorbs impact without cracking. The flexible shell bends under pressure and rebounds to shape, making it lighter, stronger, and more durable for frequent travel and using. A scratch-resistant textured finish keeps your luggage looking clean after every trip.note: 20in is best for carryon (not expandable), 24in & 28in expands 20% for more Spaces. G-Series Smooth Multi-directional Spinner Wheels: Benefit from brand new soft TPU and lubricating balls inside wheels, suitcase moves very silent and smoothly with 360 rotate double wheels. Luggage passed 100% perfect drop test. Luggage also passed the walking test ( A professional luggage quality test: Luggage can loads 20kg and walks 40km at a speed of 10km/h ). Best choice for long-term travels and business trip. Adjustable & Sturdy Ergonomic Aluminum 3-step Telescoping Handle - allow you to maneuver in tight spaces and provide effortless movement. Smooth ups and downs for more comfortable carrying. Added 2 reinforcement brackets on the flip side of top carry handle and side carry handle to avoid hardshell cracking and 2 Soft rubbers that aim to protect your fingers when lifting heavy stuffs. YKK Zipper & TSA Lock Dual Security: Top mounted TSA lock which allows only TSA agents to inspect your luggage without damaging the lock when traveling. YKK Zippers are not easy to be pierced by sharp tools, such as screwdriver, that protects your stuffs in luggage and privacy more better. 3 Piece Luggage Set- Every Trip Covered. Full-capacity design and full-zip interior divider with cross straps to keep your luggage organized. Package: 20" & 24" luggage nested in 28", one set will be packed in ONE box. And supported by professional customer care throughout your ownership experience.