FORGED CARBON COMPOSITE CORNERS - Built to take a hit - these ultra durable corners absorb impact to keep your gear protected and your luggage intact. Ultra-durable, smooth-gliding wheels designed for quiet movement. across any terrain. OVER-MOLDED TROLLEY HANDLE -Ergonomic and reinforced - built for a stronger grip and better control under heavy loads. Gain up to 5L of extra space with the 2" expansion zipper and keep your belongings safe with a built-in, TSA-compliant lock system. COMPRESSION PANELS - Lock belongings in place and stay organized with dual compression panels and integrated zip pockets.