Waterproof, crushproof, dustproof; Super-light proprietary HPX Polymer - up to 40% lighter; Three tier customizable pullout trays give you the flexibility to organize; Removable trays are easy to wipe down to keep sanitized; Press & Pull latches have been tested for extreme pressure and impact situations; Storage bracket keeps used and sharp objects contained; Fold down over-molded handle; Waterproof O-ring seal; Automatic pressure equalization valve - balances interior pressure, keeps water out; Stainless steel padlock protectors