I purchased this new and used it once, but I'm selling it because I stopped wearing glasses. Approximate size: 14cm wide x 17cm long (slight variations possible) It will be delivered in a zippered bag. Model number: osama-18 Product name: King's Anti-Fog Main ingredients: Nonionic surfactant, silica (= silicon dioxide) Material: Polyester, nylon [Product Description] This microfiber cloth has a special coating that combines the original cleaning function with an anti-fog function. The effect lasts for about 12 hours, and one cloth can be used approximately 300 times. It can be used in various situations, not just when wearing a mask. [How to Use] ・It is recommended to wash the cloth with water to remove any dirt before using it. (Using a cleaner may reduce the effectiveness depending on its ingredients.) ・After removing moisture with a tissue or cloth, breathe on the lens and wipe it with the cloth for a better effect. ・After washing the lenses with water, wipe both sides of the lenses evenly about 10 times, as if applying the solution. [Regarding Use on UV Cut Lenses] UV cut lenses have two types: 1. Those with the UV cut material incorporated into the lens 2. Those with a coating applied on top Type 1 can be used without any problems, but with type 2, depending on the coating method, the effectiveness may be reduced, or some kind of problem may occur. Please follow the instructions from the store where you purchased your glasses, or refer to the lens manual. Instant purchase OK