This throwback goggle style was made in honor Dr. Bob Smith, who, nearly 50 years ago, changed skiing forever by inventing goggles sporting dual-pane lenses and foam vents. Smith's Dr. Bob Limited Edition I/O Goggles use the modern version of dual-pane lenses to turn your goggles into a mobile storm window—fog won't get in your way of seeing what you're skiing. Equipped with a bonus lens and easy interchange system, the Ignitor is designed for bluebird skies or cottonball clouds; Yellow for cloudy or flat light. A Porex filter and three-layer DriWix face foam work in conjunction to keep water and cold air outside while leaving the warmth inside, and 5X anti-fog treatment supplements design for even better resistance to foggy-goggle syndrome. Includes limited edition white with red and blue stripes microfiber goggle bag with replacement lens sleeve.