For long runs, or hot laps on your mountain bike, a clear view of the rocks, roots and terrain ahead is essential. You can count on the Smith Vert PivLock adult sunglasses for a distraction-free feel and a widescreen view that lets you get in the zone whether you are letting it rip downhill or measuring your effort on a climb. Their cylindrical shield lens and rimless design make for an ultralight design and unobstructed vision. The PivLock design lets you easily swap between the ChromaPop™ lens and the bonus clear lens to match the light conditions.