AIR FLOW CONTROL™ TECHNOLOGY
Howard Leight's patented Air Flow Control delivers optimal attenuation
across all frequencies, without increasing ear cup size or weight. A
patented base plate chamber and high-tech non-woven layer manage the flow
of air inside the earmuff to control how sound reaches the ear. The
result is better, more consistent overall attenuation for virtually all
industrial noise environments. Air Flow Control is a standard feature on
all Leightning series earmuffs.