Made with durable, high quality ABS plastic construction and Butyl rubber ear pads for maximum performance and all day comfort. Each EarShield Quad Muff features 4 omni directional, wind resistant, high frequency micophones with durable iron gauze mic covers to enhance your hearing up to 9x’s. They also feature independent volume controls with AFT, Adjustable Frequency Tuning. This allows you to fine tune each set to your individual hearing needs as well as specific environments. Those features along with our Sound Activated Compression for sounds above 85dB to protect the user from the harmful effects of muzzle blast, give you the finest hearing enhancement and protection available today. Whether spending the day in the field or on the range, EarShield headsets are a must.