Created as a proprietary ventilation system that works with vents on Smith goggles, helmets equipped with AirEvac enjoy a steady stream of airflow through the entire system. Ventilation at the front of the helmet pulls cool, dry air in to strategically placed channels within the shell of the helmet. Vents on the top and back of the shell work to exhaust the hot air that would otherwise be trapped around the wearer’s head. This flow of air makes for a more comfortable riding experience and helps prevent goggle fog as well.