See the entire mountain in crystal clear vision with the exceptional Smith Knowledge OTG Turbo Fan Goggles. These goggles really go all out to give you the finest in comfort, clarity and protection. These goggles are OTG meaning you can wearing your glasses with them so that you can see where you're going on the mountain. But to also help you see is the 2-Speed Turbo Fan, which results in unmatched fog-free clarity. [+]