Leupold's In-Fused Polarized Technology uses an advanced manufacturing process that fuses the polarization film in-between two of the lens layers. This process provides permanent polarized protection that won't scratch or deteriorate over time, so you'll never have to worry about slowing down. Built for the bold, Leupold Performance Eyewear are not sunglasses. They're engineered to elevate and protect the outdoor athlete. Shatterproof lenses combined with the most resilient non-metal materials on the market will stand up to ballistic impacts, extreme stress, and harsh weather. They're designed to be more than you need, so you can give it all you've got, day in and day out. The Tracer comes with a shadow gray lens, clear lens, and a yellow lens.