Watch this video in which we carried out a standard anti-fog test on the lenses of the Dixon TAC-RX sports glasses / goggles.
This accepted test involves putting the glasses into a freezer to cool them rapidly for 1 minute and then bringing them out quickly into the warmer atmosphere of room temperature.
The test enables you to see whether lenses start to mist up when water vapour in the room condenses on the cold lens surface.
