Honeywell Astro Series Anti-Fog OTG Over-the-Glass Safety Glasses, Clear Lens (RWS-51015) Lightweight uni-lens offers panoramic vision and good protection from flying particulates OTG (over-the-glass) design fits easily over most prescription eyewear Adjustable lens inclination and temple length; easy and economical lens replacement system Clear lens is suitable for outdoor use, and ideal for most indoor work environments Professional grade safety eyewear meets ANSI Z87.1-2010 and CSA Z94.3 safety standards; meets military V0 ballistic impact test requirements (7x higher than ANSI)