ESS 2.2mm Polycarbonate Interchangable Lenses for CDI Sunglasses Smoke Gray. ESS CDI Interchangeable Lenses are high-impact extra-thick 2.2mm polycarbonate lenses. CDI ESS Replacement Lens can be easily exchanged for quick adaptation to your environment. ESS CDI Sunglasses Replacement Lenses are available in five colors: Clear - 7400185 Smoke Gray - 7400320 High Definition Yellow - 7400186 Rose Copper - 7400188 Mirrored Silver - 7400187 2.2 mm ESS Interchangeable Lenses for CDI Sunglass provide 100percent UVA/UVB protection and have premium Clear Zone anti-fog/anti-scratch coatings. Features of ESS CDI Interchangeable Lenses: Optically-Correct High-Impact Extra-Thick (2.2mm) Polycarbonate Package Contents: ESS CDI Replacement Lenses - 2.2mm Polycarbonate Interchangeable Lenses Specifications for ESS CDI Replacement Lenses - 2.2mm Polycarbonate Interchangeable Lenses: Manufacturer: ESS Condition: New