The I/O Mag goggles feature Smith's highly anticipated MAG lens change system, which uses resilient, waterproof magnets to affix lenses to its frame. Thanks to magnetic force, the lens self-guides into place and allows for the fastest, easiest lens swaps in the game. Its lens change system isn't the only thing making it easy to adjust to changes in the weather; the 5X anti-fog inner lens prevents warm, moist air from clouding your vision while the AirEvac integration ventilation system helps move that fog-causing air out. Featuring one of Smith's largest spherical lenses, the I/O Mag XL offers a maximized field of view. And with Chromapop and TLT technology, the I/O Mag XLs allow you to enjoy every moment with vivid color and amplified detail. The XL model expands on standard size for those looking for the largest possible lens. For optimized performance and industry-leading technology, reach for the Smith I/O Mag XL goggles this season.