Shatterproof Selenite Polycarbonate Lenses that Meet the MIL-PRF-32432(GL) Ballistic Standards. ANSI Z87.1-2010 High Velocity and Mass Impact Standards, and EN 166 B Resistance to High Speed Particles, and US Federal OSHA 1910.133(b)(1)(i) Standards. 100 Percent UVA/UVB Protection with Distortion Free Clarity. T-Shell lens coating resists scratching in extreme environments. Foil Lens Coating Provides Anti-Fog Protection. Sleek Design that is Night Vision Goggle (NVG) Compatible. Removable Facial Cavity Seal. Smoke Gray Lens Provides Max Glare Reduction with No Color Distortion: Light Transmission 15%. Clear Lens for Night, Indoor, Overcast, and Very Low Light Conditions: Light Transmission 90%. Rx Ready with Wiley X Spear Insert (SP29X).