The I/O MAG is the magnetic version of the high-end Smith I/O ski goggle. This model is equipped with the Smith Mag lens changing technology, a double-lock system with 8 magnetic contact points for quick and easy replacement. In addition, the ChromaPop interchangeable spherical ChromaPop lenses supplied with this model are equipped with the TLT technology and a Porex filter, offering a perfectly sharp level of vision and avoiding optical distortions linked to altitude variations. Plus, with the 5X internal anti-fog lens, you get Smith's best anti-fog treatment, ensuring that fog never ruins your vision. This model is fitted with a category 3 lens for use on sunny days, while the extra lens offered is designed for use on cloudy days. Thus, you'll enjoy great visual acuity in all conditions. Finally, this model is also very pleasant to wear, thanks to its latex frame topped with a triple-density foam, an ultra-wide strap with silicone inserts that ensure a better fit, and so on. Goggles Smith ---Io Mag French Navy Chromapop Sun Black + Chromapop Storm Rose Flash