Review on Fogetta Bout It: Long-lasting Anti-Fog Wipe for Glasses - Reusable, Microfiber Cloth with Built-in Treatment - 100 Applications by Amanda Harrell

This Opper Fiber anti-fog fabric works very well. I've only used one other anti-fog compound in the past and this one works better. The fabric feels strange, like wax on it. But the film on the lenses after use does not go. Simply wipe your glasses well with a cloth so they cover the surface well for best results. Helps with wearing masks. But it also helps when I get out of my air-conditioned car in the heat. It's not perfect, but definitely an improvement. The product description above states that this fabric lasts for 700 days. According to the package insert, it can be used up to 100 times. It's important that the fabric doesn't dry out, so hold it by the small zipped pocket for storage. All in all, this little stuff lives up to what it claims, except for durability. The time will show.