The Magnum Series safety glasses are ergonomically dimensioned for a 3 point fit, the ultimate in comfort. Comes in a Black Frame with FOG FREE Clear Lens. Exceeds ANSI Z87.1 safety standards Provides maximum UV protection Ergonomic nose pad w/ self-adjusting rubber fingers Built-in hinge stops Polycarbonate safety glasses protect your eyes from impact, but the glasses deteriorate due to scratches, light, etc., and should be replaced after 2 years.