Bertoni Sports Photochromic Sunglasses for Running Ski Motorcycle Golf Cycling - Alien Italy Photochromatic ALIEN F by Bertoni Italy - NEW Sunsensor Photochromic Antifog Lens from cat 0 to 3: Innovative Technology , react consistently to light and UV rays - they darken from category 0 transparent ( indoor, foggy days, bad weather ) to grey category 3 sun tint ( outdoors, high brightness ), this lens adapts itself to changes in light - Made in Shatterproof PC 2.2mm Antifog Anticrash - 100% UV Protection - Wide peripheral vision Frame made by Nylon Mesh , weight 19 grames - Wraparound design: protects the eyes from wind and bad weather, provide enhanced peripheral vision Antifog lenses made in imact resistant Polycarbonate - 100% Protection against UV rays Size: suitable for all types of faces (narrow to large) - Grip at the tip of the arms and nose-pad, keeps the sunglasses from slipping Sports Fashion sunglasses for cycling, moto, golf, running, skydiving, motorcycle, outdoor - Bertoni provides lifetime after sale service for all Bertoni goggles and sunglasses.