Gear Aid Goggle Bright

Goggle Bright offers high-performance anti-glare protection in a convenient
packing. The special formula offers long-lasting visibility without blur
in all types of swimming goggles. Goggle Bright is also suitable as
general anti-fog and lens cleaner for goggles, ski masks, hockey masks, masks
paintball, telescopes, night vision goggles, binoculars, etc.
The fogging of the lenses is created by the warm moist air inside the lenses of glasses, which meets the cold (due to contact with water) surface of the lenses.
Therefore, when this warm air cools, some of it condenses creating
tiny droplets, which obstruct visibility.