The KLIM Viper redefines the riding experience on the trail. The Viper is engineered to provide the best optical clarity, vision, field of view (FOV) and fit experience. Ventilation and moisture management systems aggressively combat fogging. Integrating a super-thin frame design, the Viper is compatible with a wide range of open-face helmets. FOV+ Frame geometry for maximum field of view. Polycarbonate UV400 single lens, 100% UVA and UVB protection. Fogtech HD anti-fog lens coating. Triple-layer breathable face foam. Three-post tear-off system. Includes premium cleaning cloth / storage bag. Strap outriggers (exclusive to Viper Pro). Air force induction (A.F.I.) (exclusive to Viper Pro). 46 mm wide goggle strap (exclusive to Viper Pro). Removable roost / nose guard (exclusive to Viper Pro). Laminated tear-offs included (exclusive to Viper Pro).