Lincoln Electric  Starlite Safety Glasses | Shade / IR 5 | Anti Scratch | K2967-1 INFARED (IR) PROTECTION  Made from a special polycarbonate to offer IR 5.0 protection for use in grinding, oxyfuel cutting, plasma cutting and more IMPACT RESISTANT  Meets ANSI Z87+ compliance testing for impact resistance ANTI-SCRATCH  The lenses are coated with an anti-scratch layer for added resistance versus sharp or pointed particulate CURVED LENS PROTECTION  Each lens is designed to wraparound the eye socket for forward and peripheral protection LIGHTWEIGHT - The high strength plastic frame and lenses weigh less than 1 oz. for all day comfort UV PROTECTION - Polycarbonate lens provides 99% UV protection TRUSTED BY PROFESSIONALS  These safety glasses are used by professional fabricators on a daily basis