Bertoni F300 photochromic sunglasses have photochromic lenses with antifog, with increasing and decreasing exposure to UV rays, tend to clear to smoke automatically, always ensuring an excellent visual performance. The frame of the sunglasses of this collection are made by polycarbonate, a plastic material with high impact resistance, lightweight and durable.
Photochromic lenses in shockproof polycarbonate protect the eyes every day, in the presence of sunlight, overcast or intermediate weather conditions. In addition, they are treated with a special resin which removes the condensation that forms on the lens surfaces in the transition from hot to cold. The reaction time of the photochromic lenses are very fast as 8 seconds to go from clear to smoke, and 35 seconds from smoke to clear.