Heat can build in goggles rather easily, especially when your skiing or boarding on warmer days. Condensation from the temperature differences inside and outside of the goggle can form on the lens and fog your vision, making it tricky to avoid other resort-goers. Oakley has found a remedy for this ailment in their F-2 and F-3 anti-fog treatments. These coatings are applied on the interior of all of their youth and adult goggles. F-3 and F-2 treaments give the lens the ability to absorb large amounts of water, which keeps the condensation from forming and your lenses from fogging.