Rudy Project Propulse is a lightweight, ventilated sports sunglass built for running and endurance activities. It combines a secure, wrap-around fit with interchangeable high-contrast lenses for changing light conditions. Key attributes: Gray | Multilaser yellow | Impact-resistant polymer | Ultra-lightweight | Ventilated frame (Power Flow ventilation) | UV protection (UV400) | Impact-resistant | Fog-resistant | Interchangeable lenses | Adjustable nose pads (Ergonose 11) | Non-slip, helmet-compatible temple tips | Lightweight construction | Wrap-around geometry | Ergonomic temple arms | Integrated ventilation channels | Interchangeable lens system | Dimensions & fit: Lens width: 75 mm | Lens height: 45 mm | Bridge: 11 mm | Temple length: 126 mm | Weight: 26 g | Optimized for medium faces | Secure, natural compression fit for sports | Composition & care: Frame: impact-resistant polymer | Lenses: RP Optics / ImpactX (impact-resistant optical material) | Clean lenses with a microfiber cloth; rinse with mild soap and water for stubborn dirt. Avoid chemical solvents and store in the protective case when not in use.