Elvex GG-30G-AF Visionaire, Splash & Impact Resistant Goggle with Gray Anti-Fog Lens. Base six Polycarbonate lens with SuperCoat anti-fog coating. Impact resistant, molded and 2.2 mm thick lens. Four indirect ventilation slots further improves fog resistance. Wide contact between goggle and face provides for a very comfortable fit. Unique and functional nose bridge provides excellent seal.