When it comes to safety eyewear Radians is unsurpassed in selection, quality, delivery and value They offer everyone's favorite styles of safety glasses plus innovative lens colors and styles you won't find anywhere else These have a state of the art ventilation design that offers excellent protection against liquid or chemical splash Fits over most prescription eyewear The lenses are clear optical grade polycarbonate Neoprene headbands adjust for a comfortable fit The lenses are clear allowing a maximum visible light transmission, this excellent safety lens is used for indoor applications where impact protection is required Meets or exceeds all Ansi Z87.1 and Csa Z94.3 requirements