SKB ISERIES 1813-5 WATERPROOF MOLDED CASE WITH FOAM INSERTModel 31 1813 5 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. Standard features include a molded in hinge, padlock loops, patented trigger release latches, snap down rubber over molded cushion grip handle, automatic ambient pressure