Medium / large fit

The inside of the material has a grid pattern where temperate air flow

60-grams of high lofting synthetic insulation gives you plenty of insulating warmth

UnderBite enhances turning ease and edge hold

PivLock™ leash retainer allows you to quickly detach the included sunglass leash

Smith IO Goggles 2019 Color:Black Medium / large fitThe I O combines a wider field of view, innovative Responsive Fit frame design, and updated looks. All while using your same proven lens. The spherical lens has 5X anti fog, Smiths highest level of anti fog technology, and TLT optics for crystal clear vision. The original I O was the first goggle to solve the problem of what to do when changing light and weather demanded different lenses. The new I O continues that legacy of uncompromising