Shatterproof Selenite Polycarbonate lenses that meet the MIL-PRF-32432(GL) ballistic standards: ANSI Z87.1-2010 high velocity and high mass impact standards: as well as US Federal OSHA 1910.133(b)(1)(1) standards. Smoke grey lenses provide glare reduction without distorting colors. Excellent in bright/glare conditions. Light transmission 14%-20%. T-Shell Lens coating resists scratching. 100% UVA/UVB protection with distortion free clarity.