FIELD OF VIEW
The I/OS is a smaller-frame goggle and has a correspondingly smaller field of view. The peripheral vision is fine and doesn’t have blind spots but don’t buy this goggle for its field of view.

FIT
The triple-layer face foam and pliable frame on the I/Os should make for a great fit and contoured on my face nicely. Unfortunately, the foam was scratchy and lacked the cushy feel of other goggles in this class. I never felt at home in this goggle because it just wasn’t comfortable on my face.

ANTI-FOG
No fogging occurred under any conditions. Note that I tested in the relatively dry climes of Colorado and don’t generally overheat when I ski. So use in humidity might yield a different result.

LENS QUALITY
The Smith ChromaPop lens is impressive next-generation technology. While other lenses compensate for distortion, these lenses enhance what you see. The view is more vivid and features really stand out. The landscape truly “pops” when viewed through these lenses.

FRAME
Smith pioneered the interchangeable lens goggle but I’ve always found the I/O system to require too much work for a lens change. Unfortunately, the I/OS continues this tradition of too many clips, grooves, and notches to make what should be a simple switch of the lenses.

VALUE
The price of the I/OS is a little on the high side and puts you above $200 for the ChromaPop lens. While the lens is definitely worth the extra cash, I’d like to see better all-around features for this price point goggle.