Premium wind deflectors with external fit, designed specifically for BYD E6 MK2 2021. - Function: Prevent windshield fogging when you open a window; vents moisture out for a clear view and fresh air. Works especially well in rain or snow. - Compatibility: External fit for BYD E6 MK2 2021, suitable for side and rear windows. - Material: High-quality ABS plastic that withstands high temperatures, wind, rain, and environmental wear; aerodynamic and flexible design that won’t bend or break. - Easy installation: No special hardware or drilling required; simple design allows quick mounting on side and rear windows in minutes. - Use scenarios: - Rainy days: vent cabin without fogging to maintain clear visibility. - Snowy days: improve airflow while reducing interior condensation. - Warm days or crowded vehicles: share fresh air from side or rear windows without compromising visibility.