Smith continually develops sport eyewear that hits the the mark. Take the Shift MAG, for instance. With a contemporary shield shape and design that give excellent visual range and coverage, the lens shape is ideal for cyclists and runners, offering clarity and protection at any speed. The Shift MAG gives cyclists and runners every performance advantage possible, from the superlight frame down to the nose piece.

No doubt, the most popular feature is MAG- the magnetic interchangeable lens technology. Snap the magnet on the side for quick, fingerprint-free lens changes, but a solid feel and zero-error system design. These Smith sunglasses come with one clear lens as well a color-enhancing ChromaPop or Photochromatic lens. Flatter in lens base curve than most performance eyewear, the 5-base frames stay put with a two-position nose piece and no-slip temples.

The Megol material used on the temples and nose piece is hydrophilic and it offers a secure feel when you are dry or dripping with sweat. We have always appreciated the use of the darn near unbreakable Grilamid TR90 frame material, as well as the hydroleophobic lens coating Smith uses that repels sweat, oils, and water. The ChromaPop lens technology enhances clarity and natural color without feeling too intrusive or affecting your vision after a long ride or run. For those who chose a Photochromatic lens, the gradient change over the full Variable Light Transmission range is excellent- but keep in mind this is contingent on Ultraviolet light, so they won't react in a vehicle they way they do outside. Speaking of UV, the Shit MAG blocks 100% of UVA/B&C rays.