Equipped with the patented ESS Adjustable Ventilation System™ (AVS), the high-impact lenses click forward and back to regulate the ventilation. Features ESS's advanced ClearZone FC™ anti-fog and anti-scratch lens coatings, lenses are highly impact resistant, and exceed the US Military's .22 caliber ballistic impact test MIL-V-435IIC, all lenses provide 100% UVA/UVB protection and precise optical clarity for distortion-free vision. Includes Clear and Smoke Gray lenses.