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.Features:Prizm™ snow:- Oakley’s exclusive lens technology designed to enhance color and contrast so you can see more detail.Replacement lenses:- Switch your old lenses for some shiny new ones, replacement lenses are available for select styles. Keep in mind that if you replace any other parts your warranty will become void.Specifications:- Light transmission: 39%- Light conditions: Snow and overcast- Contrast: Increased