Jackson Safety Nemesis CSA Safety Glasses (20383), CSA Certified, Light Blue Lens with Blue Frame, 12 Pairs / Case 12 Jackson Safety Nemesis CSA Certified Safety Glasses / Case; Blue Frame, Light Blue Lenses (provide enhanced contrast in sodium vapor lighting environments and bright work environments that use yellow incandescent/fluorescent lamps) CSA certified and meets ANSI Z87.1+ standards for personal eye protection Stylish comfort, lasting protection with a sporty, flexible, lightweight design that your employees will be happy to wear Polycarbonate lenses provide 99.9% UVA/ UVB/UVC protection Patented Flex-Dry nose piece designed for comfort with enhanced flexibility and integrated ridges to channel sweat away from the eyes, and help prevent slippage down the nose