Ultra lightweight polycarbonate shells offer high impact protection Unique expansion section adds up to 50% additional capacity when needed Stylish curved internal aluminum handle system with transparent push button lock top handle Curved handle system reduces arm stress when rolling Corner transparent ball bearing wheels for stability Full lined interior with packing divider and organizer pockets Soft rubber top and side handles for extra comfort #10 interlocking zip pullers on main compartment Luggage tag on each case