【Anti-fog Microfiber for Eyewear】 LOOY is a dedicated cleaning cloth that provides a coating function on glasses to prevent misting that is likely to occur when wearing face masks. Anti-fog Microfiber for Eyewear LOOY Product Features Rub your eyeglass with LOOY to form a coating which prevents moisture formed on glasses surface Suitable for normal eyewear, safety goggles, and camera lenses Cloth size: 19cm x 14cm Last for 8-12 hours after rubbing One cloth could be used 200 times Soft texture. Easy to carry Do not wash. Avoid using under high temp. and moist environment Made in Korea