Three-Point Fit that holds lenses in precise optical alignment. Integrated hinge mechanism. Plutonite® lenses that stop every wavelength of UVA/UVB/UVC and harmful blue light up to 400 nm. HD Polarized lenses minimize glare. Glare reduction and tuned light transmission of Iridium® lens coating. Optimized peripheral vision with six-base lens curvature. Metal icon accents. Made in U.S.A.