Review on 2 Pack Blue Anti-Fog Eyeglasses Cloth: Prevents Fogging on Glass, Mirrors, Lenses, and Windows - Lint Free Nano Microfiber Cleaning Cloths by Jennifer Mounce

So far in the short time I've used it I can say it works most of the time. Recently, due to the warm weather, I am unable to fully appreciate this item. I bet it doesn't work for the specified number of hours. I noticed some blurring in my vision, which I think is due to a chemical trying to prevent fogging, which has gotten the inside of my lens wet. I have not completely abandoned this item and will continue to use it until I am sure it works. I don't have specially treated lenses but please I'm pretty sure this will destroy this coating so check with your lens specialist before using.