technical excellence and aesthetics combined. the vonzipper capsule has a fog-free, cylindrical double lens and is equipped with the vonzipper 4play lens interchange system. the triple density foam on the face ensures comfort and optimal moisture balance.wildlife black fire chrome lenswildlife lenses work like polarised lenses, only they filter out an additional 99.9 % of harmful hev rays. as with polarised lenses, glare is reduced and contrast is increased. the wildlife cosmic chrome lens is suitable for blue skies but also slightly cloudy as well as changeable conditions.transmittance of visible light: 26 %