You can only scope your line if you can see where you're going. Putting on the Smith I/O MAG™ XL goggles is like flipping the switch from regular to extra-widescreen. Our ChromaPop™ lens tech boosts color and contrast, so you get the clearest picture of the terrain ahead. Our highest level of anti-fog treatment and air flow keep the view sharp. Whether the day dawns clear or stormy, lens swaps are a snap thanks to our quick-swap MAG™ lens system. Because no two faces are the same, the XL model expands on the standard size for those looking for the largest possible lens. These goggles are over the glasses compatible.