Feature: Nano-technology, Lasts up to 48 hours Our products use advanced Nano-technology, with the nano-cellulose materials which extracted from natural plants to replace the traditional low-efficiency anti-fogging agents. The ingredients are safe and non-irritating, and the fog can be dispersed quickly. With one simple wipe, the anti-fogging effect can last for 48h. The premoistened wipes can not only meet the cleaning requirements, remove oil and dust, the liquid on the screen can quickly evaporate, and wipe the screen without leaving a trace. Lint Free and Scratch Free The wet wipes are made of lens care paper,super soft and safe for lens. It's soft and delicate in texture,tough and not easy to break, and will not shed chips and leave no residue during use .It's save for any sensitive lens,use for eyeglass,goggle,helmet,visors,screen,and camera lens,etc. WARM REMINDER: About Anti-Fog Cloth 1.DON'T WASH IT BY WATER AND OTHER WET THINGS. 2.AFTER USE,PUT IT BACK TO THE SEALED POUCH Item Type :Anti-Fog Wipes Material:Nano-Microfiber Color:White/Blue Type:Optioanl A 50Pcs Disposable Anti-Fog Wet Wipes B 1Pc Reusable Anti-Fog Cloth Size: More detailed,please see photo. Quantity: 1 Set. Note: Size for manual measurement, there may be a 0 to 3mm error, belongs to the normal phenomenon. And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 Set x Anti-Fog Wipes.