SKB 3I Series Cases are Strong, Tough and Waterproof, You'll want to have one anywhere you go! 3I Series Injection Molded Mil-Standard Waterproof Cases are molded of ultra high-strength polypropylene copolymer resin, featuring a gasketed, water and dust tight, submersible design that is resistant to corrosion and impact damage. Features a continuous molded-in hinge, trigger release latch system, comfortable, snap-down rubber over-molded cushion grip handle, automatic ambient pressure equalization valve, resistance to UV, solvents, corrosion, fungus and impact damage. Multi Purpose Case The SKB 3I is the perfect solution for storing and transporting your delicate electronics, A/V equipment, microphones, cables and music accessories. SKB 3I Series Features: Waterproof and dust tight design Continuous molded-in hinge for added protection Trigger release latch system Snap-down, rubber, over-molded, cushion grip handle Ambient pressure equalization valve Resistant to UV, solvents, corrosion, fungus Resistant to impact damage SKB 3I Cases: Standing up to the pressure To test the durability of the SKB 3I cases, we here at AMS decided to have a little fun by parking a truck on top of a 3I case. As you can see, the case and its contents made it through unscathed.