Polarized Mirrored Gray 2.2mm polycarbonate replacement lenses for the CDI™ sunglass. These polarized lenses reduce glare and eye strain, in addition to providing 100% UVA/UVB protection. CDI™ replacement lenses are also available in Clear, Smoke Gray, Hi-Def Yellow, Mirrored Copper, Mirrored Gray, and Mirrored Silver. The CDI's Lateral Exchange System™ allows quick lens interchange. Important Note: ESS polarized lenses do not offer the same level of impact protection as non-polarized lenses. Although these lenses exceed ANSI Z87.1 requirements and are thus considered compliant with U.S. Federal OSHA, they do not meet the same MIL SPEC impact tests that non-polarized CDI sunglasses lenses do. Polarized products WILL NOT protect against all impacts nor will they protect against all chemical splashes.