These replacement lenses for the CDI MAX™ sunglass are built from extra-thick, 2.4mm high-impact polycarbonate. The CDI MAX's Lateral Exchange System™ allows for rapid lens interchange. These kits include two CDI MAX™ lenses (right and left) and a protective lens pouch. CDI MAX™ replacement lenses are available in Mirrored Silver, Clear, Smoke Gray, Hi-Def Yellow and Rose Copper. The CDI MAX™ sunglass is sold separately. Compliant with US Federal OSHA, ANSI Z87.1+ and U.S. MIL SPEC MIL-PRF-31013. All CDI MAX™ lenses provide 100% UVA/UVB protection. Medium-Large fit. Note: CDI MAX™ replacement lenses are only compatible with the CDI MAX™.