Effective protection against fogging lenses. The Zeiss AntiFog Set (15 ml with cloth) protects your lenses from annoying fogging. It provides safe, long-lasting, and highly effective protection against fogging for up to 72 hours. Suitable for visual aids, sunglasses, sports glasses (swimming, diving, ski goggles), safety glasses, masks, and hygiene masks. Enjoy clear vision for cooking, crafts, sports in the cold season, and many other situations. Lasts up to 72 hours (depending on usage) or until the next cleaning of the glasses.