SKB iSeries 18in Handgun Case - SKB iSeries Injection Molded Mil-Standard Waterproof Cases are molded of ultra high-strength polypropylene copolymer resin, featuring a gasket-sealed, water and dust tight, submersible design (MIL-STD 810G) that is resistant to corrosion and impact damage. Molded-in hinge Padlock loops Patented trigger release latches Snap-down rubber over-molded cushion grip handle Automatic ambient pressure equalization valve Resistance to UV, solvents, corrosion, fungus and impact damage