There are ordinary fog wipes, and then there is patent-pending FogBlocker. This revolutionary new product is a game-changer compared to other anti-fog solutions. A FogBlocker dry wipe can be used well over 500 times and lasts 24+hrs per use! Its ultrafine microfiber cloth can be safely used on any lenses including those that are coated. You can even apply it on all your plastic guards and goggles.