The Knowledge goggles from Smith have both brains and brawn. No longer do big and stupid go hand in hand. Smart features like the Carbonic-x lens with anti-fog let you see your way through the steep and deep. While a centering V nose shape and an articulating outrigger positioning system keep these hot looking specs in place. Designed to fit over eyeglasses, the Knowledge can be used by any snow shredder who needs a larger sized goggle frame or anyone who wants extra peripheral vision. Let these sharp goggles show you why knowledge is the key to power. Bottom Line: Let these sharp goggles show you why knowledge is the key to power.