From the Manufacturer ERB iProtect safety glasses feature a comfortable, ultra lightweight, frameless design. The anti-fog coating provides resistance to moisture in high humidity environments and occurrences of sudden temperature shifts. The hard coated polycarbonate lens offers 99-Percent UV protection, meaning they absorb more than 99-Percent of harmful ultraviolet radiation. The hard coating on the lenses helps them resist scratches in abrasive environment and help to extend the lens life. These safety glasses meet the requirements of ANSI Z87.1 for high impact.