Wiley X Replacement Lens for Saber Advanced Eyeshields are custom-made to fit the frames of your Wiley-X Saber Advanced Sunglasses. The Wiley X Saber Advanced Lenses meet stringent MIL-PRF-31013 military ballistic standards as well as ANSI Z87.1-2003 high impact certification (OSHA Occupational Eye Protection). These solid 3.0mm thick replacement lenses are the thickest, most durable lens available in the tactical eyewear market. These eye shield lenses are made of scratch-resistant and shatterproof Selenite polycarbonate, and are backed up with the company's signature High Velocity Protection (HVP) to present an unencumbered field of view. These spare lenses are the same shatterproof lenses that come standard with the Wiley X Saber Advanced Sun Glasses. All Wiley X extra lenses are ANSI Safety certified, allowing hunters, anglers, athletes, and everyone else to enjoy the same level of eye protection used by America's military forces.