On warmer ski trips, heat can build up inside your goggles rather quickly. This heat and moisture can eventually cause your goggles to fog, leaving you without clear vision. Oakley solves this problem with its proprietary anti-fog treatment, which is applied to the inner portion of their dual lenses. This coating allows the lens to absorb a minimum of 2 ml of water, effectively preventing fog buildup and keeping your vision unobstructed.