The steel alloy frame keeps the entire structure secure, most importantly the distortion free, toughened, and polished glass lenses. Offering 100% UV protection, you’ll have your choice of lenses at check-out between: True Color Grey Glass, True Color Green Glass, Cosmetan Brown Glass, Color Correct Grey Polycarbonate, Yellow Polycarbonate, and High Contrast Amber Polycarbonate. You can also choose the size of your lenses, as they are available in diameters of 52, 55, or 57 mm. As for the frames, they are available in Black, Silver, Matte Chrome, or Gold. Finally, you get to select the temple style: Bayonet or Spatula.