The Pyramex XSG Ballistic Goggle was passes the stringent MIL-PRF-31013 ballistic standards and exceeds ANSI Z87.1-2010 high velocity impact standards. Flame resistant foam padding is used to provide a comfortable seal around your eyes. While the overall design allows increased air flow for reduced heat and moisture which reduces fogging. The XS EASE replacement lens system allows for easy lens changes in all conditions. Polycarbonate lenses provide 99% UV protection are hard coated for reduced scratching and treated with a powerful anti-fog solution.