Cebe spare lens for cougar range variochrom perfo cat 1 to 3 product description replacement or complimentary nonprescription lenses for the cougar range these are polycarbonate lenses they are light and offer good shock resistance that are photochromic the lens gets darker or lighter in accordance with the intensity of the available light with a lens protection from category 1 to 3 that provide 100 percent uv protection they are designed to perform in a range of weather conditions