Attachment Type: Headband Single Number Rating (SNR): 37dB Product Weight: 351g Color: Black Designed to protect ears from very high levels of noise. Very high level of attenuation performance (SNR 37dB) in harsh environments. Ideal for airports, quarrying, paper mills, etc. Used a few times. Cleaned (with non-alcohol wet wipes). No deterioration of the earcups. This is a used item, please refrain from purchasing if you are sensitive to used items.