The Shift MAG gives cyclists and runners every performance advantage possible when it comes to speed. These sunglasses feature MAG interchangeable lens technology, which enables quick, fingerprint-free lens changes. They come with one clear lens as well as a color-enhancing ChromaPop lens. The superlight 5-base frame includes our two-position nose piece and no-slip temples, giving you a secure fit when you're going your fastest. Light-weight, large maximum coverage sunglasses provide protection like a goggle with the airflow and comfort of a sunglass, keeping the sun and snow out of your eyes whether you are skiing and skinning in the backcountry, running in an urban area, sitting on the beach after a surf session, cycling or mountain biking anywhere in the world. Shift MAG offers lens options for every situation and includes microfiber storage and cleaning bag to keep them safely stored in your pack when not on your face without adding a lot of weight. Smith designs eyewear for performance at the highest level. Sunglasses that give every performance advantage possible to gain an edge when it matters most.