Dielectric construction suitable for all workplaces, especially electrical environments. Uniform headband pressure for all head sizes, providing better comfort for long-term wear. Inner-ventilated headband minimizes pressure on the head, breathes easier in warm/humid climates. Non-deforming outer headband withstands rough treatment in the toughest workplaces. Quick-Click height adjustment remains fixed during wear. Patented Air Flow Control technology, delivering optimal attenuation across all frequencies without increasing earcup size or weight.