Smith's 4D Mag Chromapop Goggles take everything you loved about the I/O Mag, and add 25% more field of view. With BirdsEye Vision opening up the field directly in front of you and Chromapop lenses optimizing the colors and details so you can comprehend them, these goggles help you ski or ride better. AirEvac technology reduces fogging as you work up a sweat, while 3-layer DriWix foam conforms to your face to eliminate gaps.