The Peltor Optime III line of hearing protectors are developed for use in noisy environments such as airports, marine engine rooms, power stations and print works. Correctly worn, they significantly reduce exposure to hazardous levels of noise and sound levels. The Optime III have a higher attenuation rating than most hearing protectors, providing extra protection especially in areas dominated by low frequencies. Additionally, the innovative double casing technology is optimal to remove resonance effect, lowering the high frequencies. Average noise reduction 35dB