Prizm™ is a revolution in lens optics built on decades of color science research. Prizm™ lenses provide unprecedented control of light transmission resulting in colors precisely tuned to maximize contrast and enhance visibility.In skiing and snowboarding, taking the Fall Line refers to the line down a mountain that is most directly downhill. Inspired by Line Miner and fusing the large ﬁeld of view from a rimless goggle, Fall Line XL is the latest addition to Oakley’s “LINE SERIES” of cylindrical style snow goggles. With a large-sized ﬁt, Fall Line XL is optimized for a wide variety of faces and is engineered to ﬁt perfectly with most helmets. Designed with Oakley’s Ridgelock Technology, changing lenses is quick and easy while still allowing for a complete lens seal to prevent harsh conditions from penetrating into your goggle.