SawHorse SH2117 Safety Eyewear Classic Collection, HD Brown Flash Mirror Lens, Crystal Brown Frame 99.9-Percent protection from harmful UVA and UVB rays 100-Percent visually correct de-centered lenses 2.2 millimeter Panlite brand polycarbonate lens material Lens quality and performance meet and exceed ANSI Testing Z87.1 - 2003 high impact standards