This is the Wiley X Replacement Lenses Sold in PAIRS Features: Shatterproof Selenite(TM) 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 Clear lenses provide maximum light transmission allowing wearer&';s to see precise color values. Perfect for hazy or overcast, dusk/dawn conditions and indoor use. Light transmission: 89% Smoke grey lenses provide glare reduction without distorting colors. Excellent in bright/glare conditions. Light transmission 14%-20% T-Shell(TM) Lens coating resists scratching 100% UVA/UVB protection with distortion free clarity Shatterproof Selenite(TM) 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. 100% UVA/UVB protection with distortion free clarity.