The Rycote 103 Large Diaphragm Mic Foam is a discreet, slip-on foam windshield, designed to protect large-diaphragm shotgun microphones against light wind and pop noise. It is made of durable, high quality open-cell acoustic foam. The foam windshields offers up to 20 dB wind noise attenuation, whilst keeping high frequency loss to a minimum. It is engineered exclusively with high quality foam also provides excellent resistance against the damaging effects of moisture and UV light.