These new lightweight safety shooting glasses from Orvis feature Zeiss Impacto lens technology developed for military, safety, and sport eyewear. Impacto lenses are treated with Ri-Pel, a permanent transparent coating that provides an anti-fog and water-repellant barrier on both sides of the lens. They feature an Enhanced Visual System that uses a unique combination of filters within the lens providing perfect light and color enhancement. Purple lenses offer a dramatic contrast between green background colors and the brown/black color of a moving target. Orange is designed for flat light conditions and permits visual comfort over a sustained period with a brightening effect. Both are 100% UV. Non-polarized. Safety shooting glasses in purple, orange lens colors.