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 Jeremy Therrien

These anti-fog wipes are worth it. I tried one on my goggles which tend to fog up when I'm wearing a mask. My glasses still fog up, but to a lesser extent. I was able to see what was in front of me without being completely blinded by the fog, so that helps a little. These rags cannot be washed at all. They're advertised as being reusable up to 700 times, but I doubt I'll be able to get anywhere near that before they get dirty or oily enough to be thrown away. It definitely helps to store them in reusable bags after use. They are made in China. They are quite affordable compared to similar anti-fog wipes, so it's worth trying them out. 3.5 stars.