Smith Optics I/O Goggle NA Made in USA or Imported Quick Release lens change system, Includes bright light and low light ChromaPop performance lenses Spherical carbonic-x lens, 5X anti-fog inner lens, TLT lens technology for crystal clear vision Medium Fit, Responsive Fit Frame design, QuickFit strap adjustment system with clip buckle, 3-layer DriWix face foam, Helmet Compatible, Ultra-Wide, Silicone Backed Strap, and Articulating outrigger positioning system Patented Porex filter prevents optical distortion during changes in elevation, Includes microfiber goggle bag with replacement lens sleeve, *Available in Asian Fit Interchangeable Series