ZEISS AntiFOG KitEvery eyeglass wearer is familiar with lenses fogging up: whether from wearing a facemask, stepping from a cold environment into a warm one, or just consuming a hot beverage. ZEISS AntiFOG Kit anti fog spray is an easy to use solution to prevent optical lenses from fogging up. Simply spray the solution onto the lens surface and wipe until dry with the included cloth, providing up to 72 hours of fog prevention. Includes : 15ml AntiFog Spray, AntiFog