Low-profile frame design provides increased visibility and improved helmet compatibility Flexible O Matter chassis conforms to your face comfortably, even in extreme cold with discreet frame notches at temples provide compatibility with most prescription eyewear All-day comfort of triple-layer face foam with moisture wicking polar fleece lining The Line Miner L 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 large-sized fit, Line Miner is optimized for a wide variety of faces and is engineered to fit perfectly with most helmets.