Airvit wind deflectors are designed to fit into the channel of the window frame. This makes the deflector look like part of the car and is very secure. They also fit more closely to the shape of the vehicle than the stick on type of wind deflectors. Wind deflectors improve the ventilation, are lightly tinted to reduce glare from the side, reduce window misting in damp weather conditions and are aerodynamic. If the window is left open wind and rain is deflected away; this helps protect any electrical controls inside the door or on the armrest and allows fresh air to circulate.They are ideal to keep both pets and the vehicle itself cool in warmer weather.