Side window air deflectors are a key accessory of each car. They allow for natural air exchange inside the car. They prevent panes from fogging in rainy days as they allow for the car’s interior ventilation. When the door’s window is partially open, they protect the driver from direct flow of the air stream. They reduce volume of soil on side windows thus improving visibility in side mirrors. They enable the driver to keep windows partially open even during heavy rainfalls or snowfalls. They enhance stylish design of the vehicle.