Spring-loaded piston hinges. Keyhole bridge. Metal icons at temples. Lens Options: Please see color name for lens details.â€¢ UV protection of PlutoniteÂ® lens material that filters out 100% of UVA / UVB / UVC & harmful blue light up to 400nmâ€¢ Glare reduction and tuned light transmission of IridiumÂ® lens coatings Meets all ANSI Z80.3 standards. RX ready. Optimized peripheral vision due to 8.75 base lens curvature. Cloth bag included.