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. Smiths' ChromaPop lens tech boosts color and contrast, so you get the clearest picture of the terrain ahead. 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. Because no two faces are the same, the XL model expands on the standard size for those looking for the largest possible lens. Spherical Carbonic-x lens for distortion-free optics and impact resistance ChromaPop lenses enhance contrast and natural color to make the details pop 5X anti-fog inner lens for advanced fog-free performance Smith Mag lens change system uses magnets for quick, easy lens changes QuickFit strap adjustment system lets you find the right fit fast Ultra-wide, silicone-backed strap stays put Three-layer DriWix face foam wick