Features: Solar powered, no batteries are needed, reduces air conditioning use and fuel consumption. Blows hot air out of parked car and draw in fresh air. Protect expensive electric equipments from high temperature. Fits any car windows. Portable and easy to install. The Auto Cool uses sunlight to keep your car cool while you’re away. When you come back to your car, you’ll find it comfortable and cool. Specifications: Material: Plastic Size:15 x 4 x 15 Color: Black Note: The Auto Cool Air Vent is designed for use in parked cars only. Auto Cool does not work in cars with tinted windows.