The changeable lens capability allows maximum light condition versatility. These lenses are shatterproof and block 100% of UV rays. Glasses certified ANSI Z87.1-2003 high impact and optical performance standard. The glasses meet GL-PD 10-12 MCEP standard, superseding MIL-PRF-31013 ballistic standard. Rated as OSHA-grade occupational protective eyewear. Additional features include Temple Sleeves, a Prescription Ready Lens Type, an HVP Shatterproof ANSI Rating, and a Smoke / Clear / Rust Lens Color.