Inspired by Oakley’s first true oversized snow goggle, Canopy, the new Flight Tracker has a classic, stylized shape, and an oversized full-rim toric design with an optimized field-of-view in all directions. With large, medium, and small sizes, Flight Tracker will fit a wide variety of faces and is engineered to integrate perfectly with most helmets. O Matter Chassis – Flexible O Matter frame conforms to your face and remains flexible even in extreme cold. Low-Profile Frame Design – Provides optimized field of view in all directions, with seamless helmet integration. Helmet Compatibility – Oakley snow goggles are designed to work in harmony with a wide range of helmet styles, with outrigger mounts that distribute pressure evenly across the goggle chassis and silicone beaded inner straps that stay securely in place. 360 ̊ frame venting assures optimum airflow when worn with a helmet. Prizm Lens – Developed with military and shooting objectives in mind, Oakley's Prizm lens technology blocks strategic wavelengths along the color spectrum to maximize contrast between colors. HDO Lens Technology – HDO maximizes clarity and impact resistance, and gives you razor sharp clarity at all angles of view. HDO lenses provide 100% UV filtering and the best impact resistance in the business. F3 Anti Fog – F3 anti fog coating on inner lens absorbs moisture and eliminates haze. Interchangeable Lens – All lenses are easily interchangeable, allowing you to pick your favorite Prizm lens for any condition. Wide 50mm Adjustable Strap with Silicone Lining for a Secure Fit. Triple Layer Polar Fleece Foam – Moisture wicking triple-layer polar fleece foam assures all-day comfort. Glasses Compatible – Discrete frame notches at temples provide compatibility with most prescription eyewear.