The 3i0907-4-SWK Custom interior Sennheiser SW Wireless System Mic case is a very compact case and is part of the iSeries Waterproof cases. The interior features a custom cut polyethylene (PE) foam interior that will accommodate a wireless plug-on transmitter, wireless body pack transmitter, wireless body pack receiver with an extra spot for a lavaliere microphone plus additional accessories with an overall interior measurement of 9” x 7” x 4”, compact yet durable to house your delicate wirel...