CrystalTech Nano Anti-Fog Wipe Treatment for Glasses, Goggles, Masks and Visors | Reusable Cloth | Eyewear Fog Protection for Work, Cycling, Skiing, Sports | For Humidity, Sweat and Temperature Change

Package difficult to open and cloth lasted less than a week before glasses started misting up again. Total waste of money.

Thus item actually works, worth the price, and keeps my glasses clear when wearing with my face mask . Arrived on time and in good condition, would recommend purchase.

This worked really well initially to prevent glasses steaming up when wearing a mask. It seemed to wear off a bit after a few uses but is still a good cloth for cleaning lenses, doesn't leave smears or "fluff".

Worked a couple of times, but then failed even after refreshing as per instructions on pack. waste of money; doesn't stop misting after a few uses

1st use seemed to help the fog, afterwards a pointless exercise. The only good thing is you clean the lenses at the same time. I've stopped using it as it's just disappointing.

Didnt work at all

On my glasses

So used for swimming googles it works for about 30 mins and you can’t take the googles off mid swim session otherwise they will good really foggy.I previously used arena swim spray I will be going back to it.