The resilient, battle-hardened CDI sunglasses have a long track record of saving eyes and lives in hostile situations. Following a series of comprehensive overhauls, the redesigned CDI has never been better. 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. The Lateral Exchange System interchangeable lenses can be easily swapped for quick adaptation to your environment. No-slip nosepads and temple arms help keep the CDI secure, even when wet. Cam-hinge temples feature SmartTension engineering for enhanced retention and more comfortable fit.