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 of view from a rimless goggle, Fall Line XM is the latest addition to Oakley’s “LINE SERIES” of cylindrical style snow goggles. With a mid-sized, Fall Line XM is optimized for a wide variety of faces and is engineered to 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. Features Ridgelock interchangeable glass system OTG - suitable for spectacle wearers 50mm wide, adjustable strap with silicone lining for a secure fit Flexible O Matter® frame adapts to the shape of your face, even in extreme cold Frameless design offers improved visibility and helmet compatibility All-day wearing comfort thanks to the moisture-wicking, three-layer polar fleece foam Injection molded Plutonite® lens material provides excellent UV protection and filters 100% UVA/UVB and UVC rays and harmful blue light up to 400 Nm Distortion-free dual lenses with high-quality F3 anti-fog coating Reduced glare and optimized light transmission thanks to Iridium® glass coating Meets the impact resistance requirements of ANSI Z87.1 and EN 166 PRIZM™ 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. All Oakley lenses offer HDO® Technology with the following benefits Clarity: Conventional lenses can magnify images. HDO® precision gives less distorted vision across the entire field of view. Refraction: With regular lenses, objects aren’t really where you see them. HDO® offers a truer visual image so your brain won’t have to work overtime. UV Protection: All Oakley lenses block 100% of UVA, UVB & UVC rays and harmful blue light up to 400 nm.