SKB 3I-2011-MC12 iSeries Injection Molded Microphone Case with Foam for 12 Mics with Storage Compartment Ultra high-strength polypropylene copolymer resin UV, solvent, corrosion and fungus resistant (MIL-STD-810F) Complete gasket seal makes these cases absolutely watertight (MIL-STD-C-4150J) Resistant to corrosion and impact damage Patent pending "trigger release" latch system