Highlights: Works Black/Grey safety glasses with clear lenses Principles of operation an estimated 2 4 million eye injuries occur annually in the U S - And more than 1 million of these occur at home Up to 90 could be prevented through the use of protective eyewear Approvals and Standards These safety glasses meet the High Impact requirements of the American National Standards Institute ANSI Z87 1-2003 standard applications agriculture chemical construction electric utility hazardous materials Mining nuclear oil and gas paper pulp sanding grinding hazards projectiles gust product information Designed for protection against impact hazards and/or flying particles dust sparks and glare provides excellent side and front impact protection as well as comfort tuff-stuff scratch resistant lens Vented brow guard and adjustable temples.