Peltor™ 7000009666 Optime™ Noise Reduction Earmuff, 21 dB Noise Reduction, Black/Beige, Over The Head Band Position, ANSI S3.19-1974, CSA Class B Peltor™ 7000009666 Optime™ Noise Reduction Earmuff, 21 dB Noise Reduction, Black/Beige, Over The Head Band Position, ANSI S3.19-1974, CSA Class B