The SKB 3i0907-4-SWK waterproof utility case is constructed of molded high-strength polypropylene copolymer resin, with a gasketed water-tight/dust-tight design that's highly impact and corrosion resistant. The SKB 3i0907-4-SWK includes a continuous molded-in hinge, trigger-release latch system, over-molded rubber grip handle for comfort, and an automatic ambient pressure equalization valve. At Sweetwater, we've found that the 3i0907-4-SWK's custom-cut foam is a perfect fit for the Sennheiser SW wireless system. Sized to comply with airline regulations, the SKB 3i0907-4-SWK is made to go practically anywhere! SKB 3i0907-4-SWK Waterproof Sennheiser SW Wireless Mic Case Features at a Glance: Accommodates wireless plug-on transmitter, bodypack transmitter, bodypack receiver, and lavalier mic Constructed of injection-molded high-strength polypropylene copolymer resin Gasketed, waterproof, submersible design is corrosion and impact resistant Custom-cut foam creates a perfect fit for your gear Ultra-stable continuous molded-in hinge and a patented trigger-release latch system Comfortable, snap-down rubber over-molded cushion grip handle Get serious