The Smith Knowledge OTG Snow Goggle offers an excellent goggle for Skiing or Snowboarding. The Knowledge OTG comes with the Carbonic X lens in either Sensor Mirror or RC36 (shown above). The Smith Carbonic X lens offers superior clarity and impact resistance. Also, the Smith Knowledge OTG Goggle comes with a ventilation regulator at the top of the goggle, allowing you to adjust the amount of ventilation your goggles need. The Smith Knowledge OTG has a large fit and is eyeglass compatible. Additionally, the Knowledge OTG is helmet compatible and comes with the QuickFit strap adjustment system. The Smith Knowledge OTG Snow Goggle offers the complete package of a superior goggle at an affordable price.