This is a Jabra #0436-869 universal foam windscreen cushion for Jabra, Plantronics and VXI headsets. The foam cushion helps protect the microphone from particles that can clog the microphone leading to poor transmit during conversations which can lead to constantly repeating of communications when engaged with clients. Help protect your headset investing with this simple microphone foam cushion.
Prevention is much cheaper then replacing your entire headset.