The Pro 9 Noise Cancelling Hearing Protection provides effective protection from harmful sounds. Using noise cancellation technology without batteries or electronic components, it allows you to hear speech while reducing noise. The unique sound chamber technology directs harmful sounds away from the ear canal, refracting and canceling them.

The result is clear low-level sounds, such as speech, with excellent protection from harmful noise levels, like gunfire, with noise reduction of over 32 decibels, evenly across all frequencies.