Smith have taken the MAG interchangeable system & integrated it with a more expansive window to the mountains, ideal for those with a larger face or lager demands. The I/O MAG XL's extra-large spherical Chroma Pop lens enhances clarity & amplifies your experience. With OTG compatibility in mind, the I/O MAG XL design integrates seamlessly into helmets to provide the ultimate fit & function as a fog-free system.