ESS CDI Polarized Mirrored Gray Sunglasses - 740-0529The resilient, battle hardened CDI sunglass has a long track record of saving eyes and lives in hostile situations. Now with high impact, ANSI Z87. 1 rated polarized lenses, the CDI offers new ways to protect your eyes from hazards and glare. The ESS CDI Polarized Mirrored Gray high impact lenses can be easily exchanged for quick adaptation to your environment. Its high speed low drag frame and shatter resistant lenses make the CDI comfortable and