12 Pack Bomber R105 X-Bomb Safety Glasses Mirror Lens These are mirror smoke frames and Mirror lens. USA OSHA approved, conforms w/ANSI Z87+ 2003 for strength, heat resist Lens and frame made from High Index Polycarbonate IRPC lens blocks 100% of UV-A and UV-B Rays (even the clear lenses!). Contemporary wrap around design. Ultra light weight.