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You can now see more than ever before. The 4D MAG raises the bar for lens innovation with the introduction of BirdsEye Vision. This state of the art lens technology has a 25% increase of overall field of view compared to the I/O MAG. In addition Smith has evolved the MAG by integrating the dual locking mechanisms into the goggle frame outriggers to make a quick and easy lens change system. Smith knows that with BirdsEye Vision featuring ChromaPop lens technology you’ll be able to see even more detail as you take on untracked territory.