Smith MAGâinterchangeable system, Includes bright light and low light ChromaPopâperformance lenses, Spherical carbonic-x lens, 5Xâanti-fog inner lens, TLT lens technology for crystal clear vision, OTG Compatible, Large fit, Responsive Fitâframe design, QuickFit strap adjustment system with clip buckle, 3-layer DriWix face foam, Available in Asia Fit, Helmet compatible, Ultra-wide, silicone backed strap, ODS3 compatible, Includes microfiber goggle bag with replacement lens sleeve, We took the Smith MAGâinterchangeable system and integrated it with a more expansive window to the mountains. The I/O MAGâXLâ's extra-large spherical ChromaPopâlens enhances clarity and amplifies your experience. With OTG compatibility in mind the I/O MAGâXL design integrates seamlessly into helmets to provide the ultimate fit and function as a fog-free system.