A new design from the vision-mad engineers at Smith that increases overall field of view by 25% over the I/O MAG, the Smith 4D MAG Goggles raise the bar by giving you more at the corners rather than more bridge-of-nose to top-of-frame distance. Additionally, Smith has integrated the mechanical locking mechanism into the frame outriggers making lens changes super easy in the field and cleaning up the frame outline. The 4D MAG is the latest and arguably the greatest from Smith.