Redesigned and Better Than Ever The resilient, battle-hardened CDI™ sunglass has 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. The ESS CDI's U.S. MIL SPEC* high-impact lenses can be easily exchanged 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. Medium fit. The CDI's Lateral Exchange System™ makes interchanging any of the seven available lens colors quick and easy. New Improvements Include: - New cam-hinge temples feature SmartTension™ engineering for enhanced retention and a more comfortable fit. - New co-molded nosepiece and full-wrap temple sleeves feature advanced no-slip rubber that provides maximum slip resistance, even when moist. - Redesigned strap attachment system provides more secure engagement of strap and frame. - Now includes a zippered hard case and a micro-fiber pouch/cleaning cloth. Frame Now Also Available in Desert Tan. Lenses are available in: Clear, Smoke Gray, Hi-Def Yellow, Mirrored Copper, Mirrored Gray, Mirrored Silver and Polarized Mirrored Gray. CDI Kit Includes: A Black CDI frame, two sets of 2.2mm high-impact lenses (Clear and Smoke Gray), an elastic retention strap, a micro-fiber pouch/cleaning cloth, and a zippered hard case. CDI Rx Inserts are also available. * U.S. Mil Spec MIL-PRF-31013 (Clause 3.5.1.1), ANSI Z87.1-2010, CE EN 166 and U.S. Federal OSHA compliant (when not used in conjunction with Rx Inserts). All ESS lenses provide 100% UVA/UVB protection. Important safety note for CDI™ Rx Insert users operating in proximity to fragmentation hazards: ESS strongly recommends the use of high-impact polycarbonate prescription lenses to optimize impact resistance in the CDI™ sunglass. High-impact polycarbonate prescription lens material will maximize the impact resistance of the system well beyond that offered by CR-39 resin or other common materials used in prescription lens manufacturing.