Shift MAG Sunglasses audio ready tossing in your gym bag

tossing in your gym bag or just making sure you're getting enough water throughout the day

while the removable

zippered heat pack pocket

and play without a change

• HDO™ Optics for crystal clear vision and impact resistance

Shift MAG Sunglasses audio ready tossing in your gym bagGeared for speed. The Shift MAG gives cyclists and runners every performance advantage possible, from the superlight frame down to the nose piece. The coolest feature is no doubt the interchangeable lens technology. Snap the magnet on the side for quick, fingerprint free lens changes. These Smith sunglasses come with one clear lens as well a color enhancing ChromaPop lens. Flatter than most performance eyewear, the 5 base frames stay put with a two