100% waterproof open core case with rubber interior liner, steel pin hinge construction, thick ribbed walls for high impact resistance, and an adjustable pressure relief valve for airline transit. The HD (Heavy Duty) case has snap-shut latches, a thick-grip handle for extra strength and durability, and each locking point is protected with steel for extra security. This waterproof* case offers an extremely competitive choice for demanding applications. 

*products are not tested for complete submersion underwater.