With Julbo’s new SuperFlow system, the lens pulls a centimeter away from the frame, allowing maximum airflow. The unprecedented venting system kept us fog-free even on the highest-output activities (like touring uphill in a blizzard), but the foam still felt hot against our faces (so we stuck with shades when there wasn’t any precip).
In lieu of multiple lenses, you get one photochromic lens that allows up to 42 percent of light or as little as 7 percent to pass through. It eliminates the hassle of switching (and packing spares), but,
since it changes tints based on UV (which can be strong even on gray days), it can over-darken in low light. Note: Some of our male testers thought the frames were too small on larger faces, limiting peripheral vision and creating gaps between helmet and goggle.