Fully dielectric (no metal components).  Soft EVA foam dust filter with built-in air channels fills the gap between the glasses and the face, keeping dust out comfortably. Bendable, super-flex TPR temples in bright green for visibility and style. Molded nosepiece for all-day comfort.  ANSI-approved hardcoated polycarbonate lenses.  BK-Anti-FOG coating offers fog-free view even in the most hottest, humid conditions.