531300011 Xtreme Protective GlassesExtreme style, extreme performance! Incredibly lightweight for all day wear. Full side and brow protection along with a soft nosepiece for added comfort. Gunmetal frame with Revo mirrored, polycarbonate lens provides 99.9% UV protection and meets ANSI Z87.1 and CSA Z94.3 safety standards. Packaged in a clamshell.