The Oakley Prizm Airbrake Snow Goggles are a performance snow goggle with an interchangeable lens design that helps you adapt to the environment and enjoy the best vision possible. Switchlock Technology offers the most elegant and simple solution, and it does so while maximizing impact protection, eliminating visual distortion and giving you a fast and easy way to swap out the lens. No matter what the mountain has in mind, you'll be able to keep up with changing light conditions and maximize both performance and safety. Airbrake is optimized to fit medium to large faces, and the architecture offers all-day comfort. Crafted with a durable yet lightweight frame with a rigid front and a flexible chassis. Eliminating pressure in the nasal area and maximizes airflow and adapting for a perfect fit. Strap outriggers ensure pressure is distributed evenly, and are engineered to work with or without a helmet. Along the facial contact area, this goggle has a triple layer of polar fleece foam that balances pressure and wicks away moisture. The Black Iridium (18% VLT) Lens is for medium to bright light. It is an excellent all-purpose high contrast lens for sunny conditions. Features an Iridium® coating to reduce glare. This model also includes a bonus Rose (20% VLT) Lens is for improved clarity in a wide variety of conditions. UV protection of Plutonite® lens filters out 100% of UVA/ UVB/ UVC & harmful blue light up to 400nm.