Bertoni Motorcycle Goggles Photochromic Antifog Lens - Interchangeable Arms and Elastic Strap - F333A Italy Motorbike Sunsensor Riding Padded Glasses Frame: anticrash impact resistant polycarbonate - Color: mat black - Size: suitable for all types of faces (narrow to large). 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 The inside of the front frame is covered by a removable soft foam - wiindproof and comfortable - Grip at the tip of the arm and nosepad: keeps the sunglasses from slipping - - thanks to their excellent grip at arms, at the nose pads and with the elastic strap, this sunglasses will stay in place Interchangeables arms with elastic strap to have a very skin tight fitting for motorcycle and extreme sports Wraparound design: protects the eyes from wind and bad weather, provide enhanced peripheral vision