Eco Solutions Solar-Powered Auto Vent Fan Solar-powered fan keeps cars parked in sun feeling cooler and more comfortable upon return Needs only natural sunlight to work, no plugs or batteries Blows hot air out built-in vent, while taking in cooler, fresher air from vehicles circulation ducts Constructed with recycled plastic, the little fan is an earth-friendlier alternative to other models Includes a flip-up window attachment and cut-to-size PVC gap moldings; requires no tools