The ESS CDI Smoke Gray Replacement Lenses are 2.2mm polycarbonate high-impact replacement lenses for the CDI sunglass. CDI replacement lenses are also available in Clear, Hi-Def Yellow, Mirrored Copper, Mirrored Gray, Mirrored Silver, and Polarized Mirrored Gray. This kit includes two Smoke Gray CDI lenses (right and left) and a protective lens pouch. The CDI sunglass is sold separately. The CDI's Lateral Exchange System allows quick lens interchange. CDI lenses provide 100 percent UVA/UVB protection and are compliant with U.S. Federal OSHA, ANSI Z87.1?2015 and U.S. MIL SPEC MIL-PRF-31013 (Clause 3.5.1.1). Medium fit.