The original Line Miner goggle was created with the purpose of providing the ultimate in peripheral vision, with a cylindrical-style design. We were able to pull the goggle in closer to your face than ever before, allowing for incredible downward and side-to-side periphery. With a mid-sized fit, Line Miner XM is optimized for a wide variety of faces and is engineered to fit perfectly with most helmets. Prizm™ lenses provide unprecedented control of light transmission resulting in colors precisely tuned to maximize contrast and enhance visibility.