Keep your loved ones safe! SKB's 3i-4214-OP case offers military-strength protection to your electric guitar. Following in the footsteps of SKB's wildly successful MIL-Spec waterproof cases, this reality-proof guitar vault won't just keep out moisture, it'll keep out a flood! The SKB 3i-4214-OP is made of ultra high-strength polypropylene copolymer resin and built to last. Like the rest of the 3i series cases, the 3i-4214-OP shrugs off impact and water while maintaining equal pressure with the outside world. It has built-in wheels, and its corrosion-resistant hardware, comfortable snap-down rubber over-molded cushion grip handles, and patented "trigger release" latch system are definite bonuses as well.