Product details:

Available in well over 40 configurations, the 3I Series of waterproof cases are the perfect solution for storing and transporting your delicate electronics, A/V equipment, computers, cables, microphones, mixers and all other things that need thorough protection from dust, water and impact damage. SKB 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 (MIL-C-4150J) that is resistant to corrosion and impact damage. Features a molded-in hinge, patented "trigger release" latch system, comfortable, snap-down rubber over-molded cushion grip handle, automatic ambient pressure equalization valve (MIL-STD-648C), resistance to UV, solvents, corrosion, fungus and impact damage (MIL-STD-810F).Waterproof and dust tight design (mil-c-4150j).
Trigger release latch system.
Ambient pressure equalization valve (MIL-STD-648C).
In-line skate style wheels for easy Transport.
Unconditional Lifetime.