SKB iSeries injection molded mil-standard waterproof cases are molded of Ultra high-strength polypropylene copolymer resin and feature a gasket-sealed, water and dust-tight, submersible design standard features also include a molded-in hinge, patented trigger release latch system, comfortable, snap-down rubber over-molded cushion grip handles, automatic ambient pressure equalization valve and resistance to UVand impact.