3M Peltor H540A Optime III Ear Defenders

3M PELTOR Optime III Earmuffs have been developed for use in extremely high noise environments, particularly those dominated by low-frequency sounds. The product is based on a technology featuring double cup design to help minimize resonance effect, resulting in excellent high-frequency attenuation. In addition, a combination of a specially designed spacer and cup helps to provide excellent protection against high-frequency sounds.