Solar-powered automatic air vent for car eliminates getting into a stuffy car due to poor air circulation. Vent removes hot air and replaces it with fresh, cool, circulated air. Keeps nasty odors from tobacco, pet and other odors at bay. Attaches to any car window in seconds. Solar powered cell eliminates need for batteries. Plastic, 6 x 4 1/2 x 2 1/2.