Polycarbonate lenses Adjustable length and inclination lenses made of a blend of hard and soft plastic Soft nosepiece Clear, yellow, Smoke or I/O lenses Clear and yellow lenses with UV protection Smoke and I/O lenses UV400 HC scratch-resistant or HC/AF scratch and fog-resistant lenses EN 166, class 1F (HC, I/O lenses) or class 1FN (HC/AF lenses) EN 170 (clear and yellow) EN 172 (smoke and I/O lenses)