Live Life in Extra Widescreen: You can only scope your line if you can see where you're going, the I/O MAG XL features Chromapop lens technology, our highest level of anti-fog treatment and a spherical lens for distortion-free vision; the I/O MAG XL is expanded for those looking for the largest possible lens Make the Details Pop: Features ChromaPop lens technology that helps enhance definition, contrast and natural color so you never miss a detail; the smudge- and moisture-resistant coatings mean easy cleaning & clear optics MAG System for Easy Lens Change: Smith MAG lens change system uses magnets for quick, easy lens changes to suit any light environment. These snowsports goggles are over-the-glasses (OTG) compatible. Goggles come with an extra lens for low light conditions. For Maximum Comfort & a Secure Fit: Designed for ultimate integration with Smith helmets for maximum comfort, venting and fog-free performance through all weather conditions; the QuickFit strap adjustment system lets you find the right fit fast while the ultra-wide, silicone-backed strap stays put Born on the Mountain, Built from Innovation: Smith is a performance eyewear and helmet brand for those inspired to pursue new and deeper connections with the outdoors; we’ve been outfitting consumers with the confidence to experience more since 1965 You can only scope your line if you can see where you're going. Putting on Smith I/O MAG XL goggles is like flipping the switch from regular to widescreen. Our ChromaPop lens tech boosts color and contrast, so every wind lip, landing, and tree glade is as sharp as possible. It gets our highest level of anti-fog treatment and integrates with our helmets for airflow that keeps them fog-free through all weather conditions. 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.