You can only scope your line if you can see where you're going. Putting on the Smith I/O MAG goggles is like flipping the switch from regular to widescreen. The 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 the quick-swap MAG lens system. Grab yourself the perfect replacement lens for your Smith goggles, whatever conditions await!