Buckle up, the vision-mad engineers at Smith increased overall field of view by 25% over the I/O MAG with the Smith 4D MAG Low Bridge Fit Goggles. By giving you more at the corners rather than more bridge-of-nose to top-of-frame distance, your field of vision unfurls like a beautiful ChromaPop enhanced banner. Additionally, Smith has integrated their mechanical locking mechanism into the frame outriggers, making lens changes super easy. The 4D MAG is the latest and greatest, especially for those who call the mountains their home away from home.