ExFog XT Antifog System (Standard Kit / Essential Kit)Description (Standard Kit) Take anti fog to a whole new level with the ExFog Antifog system for full seal goggles. ExFog is built tough to last in a variety of environments through every season. Its fan driven system has variable speeds so that you dont dry out your eyes or waste your battery. The system is designed to drive air through tubing into the temple portion of your full seal goggles, regulating the temperature and eliminating fog. As the