These bifocal safety glasses feature a sleek wraparound frame, no side shield distortion and durable lightweight Nylon temples. Scratch resistant hard coat and anti-fog polycarbonate lens. 99.9% protection from UVA/UVB rays. Compliant with ANSI Z87.1+ 2003 standards and meets U.S. Military Eyewear Ballistic Impact Resistance Requirements - MIL-PRF-31013 clause 3.5.1.1, MIL-V-43511 clause 3.5.10.