The Ridgeline Watertight Protective Case Case Is Watertight And Dustproof. Constructed of polypropylene with pick-and-pull foam insert for impact absorbing protection and customizing storage space for your gun and accessories. Watertight & Dustproof Polypropylene Construction Customizable with the Included Pick-and-Pull Foam Maximum Impact Absorbing Protection / Adjustable Pressure Relief Valve