The I/O is Smith’s original interchangeable lens goggle and the I/O 7 is the latest update. While many of its competitors have created easier interchange systems, the I/O 7’s lens takes longer to change and is clunkier than the others in this test. Thankfully, the I/O 7’s great fit, quality lens options, and nice extras make up for the hassle.
Venting/Fogging In testing, we didn’t experience any fogging with Smith’s Vapor Lens technology and Porex Filter. There is good venting all around the goggle frame.
Field of View There is a good field of view for what Smith calls a “Medium” size frame, but nothing exceptional and certainly less expansive than “oversize” models.
Lens Quality & Options The 7 has many options, most of which are mirrored, allowing for seemingly endless combinations of lenses and different colored frames. The spherical Carbonix-X lenses are high quality, but nothing exceptional in terms of clarity.
Frame and Construction There is great flexibility and structure to this frame, but the multi-step interchange system is far too labor (and fingerprint) intensive. Many competitors’ interchange systems are easy to execute on a ski lift, but the I/O 7 takes far more time and effort than most other goggles I’ve used. Also, while some may like the buckle on the goggle strap, it’s placed dead-center where most helmets have a clip for the strap. The goggle strap buckle under the helmet clip renders some helmets incompatible with this goggle.
Fit The strap connects to the frame with a great “dual axis” outrigger that makes for exceptional flexibility. This resulted in a good fit on my face and in my helmet.