As for its lens, they incorporate HIGH DEFINITION OPTICS that exceed all ANSI Z80.3 optical standards, and impact resistance that exceeds all ANSI Z87.1 standards, including UV filtering. The result is an ultra-comfortable and adaptable lens that fits well but also provides the durability, optical perfection, and glare reduction needed by most users. However, an optional polarized lens with PLUTONITE lens material is available for even greater glare removal.