Smith Shift MAG Sunglasses Black/Photochromic Clear to Grey 173211 The Guide's Choice also includes

The Guide's Choice also includes premium Italian spring hinges

Classic Core: Full wood premium poplar core than offers fun pop

Fits medium faces

~15% lighter than anything else in its performance class

Response: Responsive

Smith Shift MAG Sunglasses Black/Photochromic Clear to Grey 173211 The Guide's Choice also includesTailored for speed enthusiasts, the Shift MAG delivers unbeatable performance benefits to cyclists and runners. From its lightweight construction to the customizable nose piece, every detail is optimized for speed. The most remarkable feature is the interchangeable lens technology, which allows for quick and smudge free lens changes with the magnetic side attachment. These Smith sunglasses include a clear lens and a ChromaPop lens that enhances color