goggle with zeiss lenses and incredibly wide field of vision . the out of open goggle comes with high-quality zeiss lenses and offers you an incredibly wide field of vision. you can change the lens in seconds and with the the one lens option, you can enjoy the best view in almost all conditions. polarised and photochromatic the one lens perfect for sunny and slightly cloudy days on the mountain, this lens adapts to conditions and works in almost any weather and visibility. it is polarised and photochromatic, providing an extremely clear view with less glare. transmittance of visible light: 16 %