This lightweight high-impact sunglass is the first of its class. Available in five colors, the CDI's extra-thick polycarbonate lenses can be easily interchanged for quick adaptation to your environment. Its high-speed low-drag frame and shatter-resistant lenses make the CDI comfortable and cool enough for downtime yet functional and rugged enough for the battlefield. Package Contents: ESS High Adrenaline CDI Military Sunglass with Terrain Tan Frame Clear and Smoke Gray Ballistic Lenses Carrying Case Lens Cleaning Cloth Neck Leash Features: 2.2mm Lenses Interchangeable Lenses Rx Available Lens Color: Clear - General purpose with impact protection and maximum visibility. Smoke Gray - Provides protection from glare and high levels of visible light and ultraviolet radiation without distorting color perception. Full compliance with the following standards & regulations:ANSI Z87.1-2010, US MIL-PRF-31013, CE EN 166(B), US Federal OSHA standards.