All SKB I Series injected 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 (MIL-C-4150J). this case features a molded-in hinge, patented trigger release latch system, comfortable, snap-down rubber over-molded cushion grip handle and a automatic ambient pressure equalization valve (MIL-STD-648C). our I Series line is resistant to UV, solvents, corrosion, fungus and impact damage (MIL-STD-810F), and comes standard with an Unconditional lifetime .