Patented latches allows you to close the case with just one finger Automatic Air Valve enable the automatic adjustment to the environment and makes the cases TSA airlines friendly Rubberized Handles makes the cases a joy to use and own Retractable Handle:Locks in the extended and closed position for stability and control Off-Road Style Wheels: You won't find these anywhere else. Wider wheels means more stability and better performance on dirt, sand and grass.