Review on Anti-fog Eyeglasses Cloth: Easy-Carry Reusable Microfiber Cleaning Cloth - Ideal for Goggles, Ski Masks, and Camera Phone Screens - Safe for All Lens Coating - 8 Pieces by Stephanie Young

Everyone who wears glasses knows fogging up when wearing a mask. And that's a constant problem these days. They are good for keeping glasses clean. You simply clean and dry your glasses. Then breathe on the lens (front and back) and wipe away some of the mist with a cloth. Then your glasses will withstand fogging for several hours, and it will be easier for you to use them with a mask.