Product description EVERY DETAIL, DESIGNED FOR THE JOURNEY TOUGH & LIGHTWEIGHT 3-layer polycarbonate hard shell, with high-strength and durable, featuring toughness and lightweight properties. 4-SPEED ADJUSTABLE HANDLE Push-botton locking system, aluminum telescoping handle designed to adapt to different user heights. FIRM SIDE HANDLE Firm top and side grip handle for multiple ways of use and more convenient to pick up, savinng your energy. BUILT-IN TSA LOCK TSA lock keeps your belongings secure, inspects your luggage without damage during international travel. CHECK-IN 28" VS TRUNK 28" SIZE COMPARISON CHART