Bertoni Sports Photochromic Sunglasses for Cycling Running Ski by Italy - F996D Sport sunglasses made by flexible and anticrash Nylon - Color: carbon painting gradient to silver Lenses: photochromic from very light brown to smoke - Antifog coated - 100% UV protection Adjustable nosepad - Special removable tips for helmets Ultralight Nylon TR90 : weight 14 grames - 70% Nylon-30% Carbon Suggested sport: multisport specially cycling, running, ski and Golfing