Summary: I bought this because a microphone Windscreen is a needed accessory when you are recording outdoors. This is an Olympus recommended accessory for the LS-20M. There is no way this will fit on the LS-20M's microphones. I am very disappointed that Olympus would recommend an accessory that they have evidently never even tried to use with their LS-20M. Note that this review only applies to the use of the WS-5 with the LS-20M.