The Oakley A Frame Snow Goggles are feature loaded goggles for small to medium faces. They feature a three-tiered defense against performance killing fog. Utilizing surge ports to control airflow, F-3 Series anti-fog treatment, and a dual lens design with a thermal barrier of trapped air. Add that to the precision High Definition Optics® (HDO®) and top it off with a wish list from the pros: 100% UV filtering, impact protection, durable urethane that stays flexible, and comfortable triple-layer polar fleece foam with moisture wicking. About the only thing you don't get with the A Frame® goggles is fog. The Persimmon (62% VLT) Lens is for flat to low light. Filtering blue light to boost contrast and increase depth perception in a wide variety of conditions. UV protection of Plutonite® lens filters out 100% of UVA/ UVB/ UVC & harmful blue light up to 400nm.