You can only scope your line if you can see where you're going. Putting on the Smith I/O MAGXL goggles is like flipping the switch from regular to extra-widescreen. Our ChromaPoplens 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 MAGlens 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 ChromaPoplenses enhance contrast and natural color to make the details pop 5Xanti-fog inner lens for advanced fog-free performance Smith MAGlens change system uses magnets for quick, easy lens changes Fits over the glasses (OTG ) and is compatible with our optical docking system (ODS) prescription lens insert Fit / Integration Designed for