Sport sunglasses with interchangeable lenses by Bertoni Italy AF109. Made in Nylon mash stress-resistant and impact-resistant, extremely light. This special material also ensures an exponential increase of the frame duration in the time. Megol nosepad, double injection temples and sold with 3 antifog lenses included, smoke, yellow and clear: smoke for high brightness, yellow for fogging and medium/low brightness, clear for low brightness conditions. Those type of lenses is well appreciate by motorcycle drivers. Suggested Sports: motorbike, running, ski, paragling. Bertoni provides lifetime after sale service for all Bertoni goggles and sunglasses.