the ostra is made of plant-based materials and comes with a medium-sized frame and quick-change system. the zeiss lens protects you 100 % from harmful uv rays and ensures clear vision.
zeiss multi layer gold lens this lens is especially suitable for changeable days.transmittance of visible light: 23 %filter category: 3bonus lens: clear purple for cloudy days.transmittance of visible light: 67 %filter category: 4featuresmade from vegetable plastic derived from cornplastic components made of vegetable plastic from castor oilframe-injected dye for greater durability, depth and environmental benefitscarl zeiss vision polycarbonate lens of highest quality100 % uv protectionspherical lens from carl zeissdouble lens systemairflow lens systemanti-fog coatingperfect fit three-layer foamhelmet compatible due to pivoting strap extensions50/45 mm polyester tape with jacquard stripessilicone on the inside of the bandexclusive hypalon label with metal logo badgelaser-etched spektrum logo on lensincluding microfibre goggle bag