The black SKB 3I-1610-5B-E Mil-Std Waterproof Case 5" Deep without Foam is an injection-molded ultra-high-strength polypropylene copolymer resin case. It features a gasketed, dust and waterproof, submersible design that is resistant to corrosion and impact damage. The case is ATA category-1 rated. There is a continuous molded-in hinge, "trigger release" latch system, comfortable, snap-down rubber overmolded cushion grip handle and automatic ambient pressure equalization valve. It is resistant to UV, solvents, corrosion, fungus, and impact damage, and the cases are lockable with a customer-supplied padlock.Injection-molded ultra-high-strength polypropylene copolymer resin caseATA (Air Transport Association) category-1 ratedMIL-STD-810F Military specification for resistance to UV, solvents, corrosion, fungus, and impact damageMIL-STD-C-4150J Military specification for waterproof and water-vapor proof cases for transit and storageIP67 Military specification for protection against dust and against the effect of immersion between 15cm and 1mMIL-STD-648C Military specification for automatic ambient pressure equalization valveTrigger release latch system is lockable with a customer supplied padlockContinuous molded-in hinge for added protectionTemperature rating = -40 to +160°F -40 to +71.11°C)Snap-down rubber overmolded cushion grip handle