12 Pairs of KleenGuard OTG "Over the Glasses" Safety Glasses, designed to fit over prescription eyewear (Base curve 5)Black Frames with Clear Lenses (ideal for indoor use for maximum light transmission), with anti-fog coatingSee-through side shields provide side impact protection without blocking peripheral visionFeatures an hard coating to prevent lens damageMeets ANSI Z87.1+ standards for high impact and polycarbonate lenses provide 99.9% UVA / UVB / UVC protection