Shatterproof Selenite™ Polycarbonate Lenses that Meet ANSI Z87.1-2010 High Velocity and High Mass Impact Standards as well as US Federal OSHA 1910.133(b)(1)(1) Standards 100 percent UVA/UVB Protection with Distortion-Free Clarity T-Shell™ Lens Coating Resists Scratching in Extreme Environments Removeable Facial Cavity™ Seal Protects Eyes from Fine Dust, Pollen, Irritants as well as Peripheral Light Smoke Grey Lens Provides Max Glare Reduction with No Color Distortion: Light Transmission 15% Rx Ready