The challenge with goggles is finding the right ones for the right conditions that fit your helmet. In order for goggles to work properly, they must fit properly. And this problem sometimes isn't the goggles' fault.
During this past spring we tried to find a goggle that worked well while in a variety of snow conditions. Naturally, different lens colors are designed to function better in different light conditions. What we found most common about last winter's light conditions was that most days it was either cloudy or snowing, which meant a flat light and a lot of moisture in the air.
When you couple that with the deep snow we had, which translates to a lot of stucks and wrestling with sleds, the goggles were really put to the test.
The three most common problems we encountered with goggles were: Once moisture got inside, it was hard to keep them from fogging; some goggles didn't seal up against the face, allowing moisture to come in; some helmets pushed the goggles down lower on the nose, causing congestion and resulting in more mouth breathing . which exposes the goggle to more moisture.
Although not all goggles encountered all of these symptoms, most encountered one or two of them. And once you fogged it was almost impossible to keep your vision clear.
Another problem with goggles is that once you stop and remove them (like when you are stuck or stopped to help someone else), you facilitate the moisture to reach the inside lens, compromising the effectiveness of the goggle to remain fog-free. Yet if you don't remove the goggle then often the heat from your forehead coupled with the lack of airflow through the lens would cause them to fog.
Although we didn't find a goggle that fit all helmets and worked perfectly in all conditions, we did find something that made the goggle better-the Haber Eliminator Fan.
This small battery-operated fan fit snuggly inside the HaberVision Prima Polarized Goggle and pretty much does what it claims it can do-keep the goggle fog-free.
The Haber Eliminator Fan has three settings: off, on and moisture-sensing. We found that by setting it on moisture-sensing, it will turn itself on when humidity starts to build in the goggle. Then, once it's cleared out, the fan shuts off, saving battery life.
We have used the goggle in the most extreme conditions and have found that we can leave the goggles on throughout the ride and they will keep the lens clear-even when we're digging our sleds out of some ugly situations.