Mid-size airline check-in case Waterproof, crushproof, dustproof Super-light proprietary HPX Polymer - up to 40% lighter Press and Pull Latches Retractable extension trolley handle Quiet rolling stainless-steel bearing wheels Automatic pressure equalization valve - balances interior pressure, keeps water out Fold down over-molded handle Waterproof O-ring seal Business card holder Stainless steel padlock protectors IP67 & MIL-SPEC certified