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 I/O has a quick release lens change system is tried and true, so you can switch lenses and stay out in the most demanding conditions. The spherical lens has 5X™ anti-fog, Smith’s highest level of anti-fog technology, and TLT optics for crystal clear vision.

Match a Smith helmet & goggle together and the vents in the top of the goggles match the position of the vents in Smith helmets. As air flows over the helmet the vents suck hot air out of the goggle to reduce fogging.