The WeatherTech 10+ BMW 7-Series Rear Side Window Deflectors - Dark Smoke are designed to provide a custom fit for your vehicle. These window deflectors are made of durable, dark smoke-tinted acrylic that allows fresh air to enter the cabin while keeping out the elements. They reduce wind noise and allow you to keep your windows partially open, even in the rain. The deflectors are easy to install and provide a sleek, aerodynamic look to your vehicle.