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 FT at High Speed at Temperature Extremes Standards, 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/Adjustable Take Flight Nose Piece Accommodates any Face. Nose Bridge. Fully Adjustable Telescoping Temples Fit a Wide Variety of Head Sizes, provides a Low Profile, and are Night Vision Goggle (NVG) Compatible. Light Rust Lens Enhances Medium-Low Light; 53% Light Transmission. 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%. Compatible with Wiley X's Prescription Lens Carrier (PTX), sold separately.