You have to deal with two types of conditions when you ski, and each requires a different lens color in your goggles. When it's snowy and cloudy, yellow goggle lenses perform best, allowing you to see a better contrast. This works great early in the morning and late in the afternoon. The second condition, when the sun comes up, requires a dark or purple lens, to reduce glare and make looking down the slopes comfortable. Smith I/O, new for this season offers two interchangeable lenses, so one pair of goggles fits both conditions. No more lugging two sets of goggles, or just dealing with the discomfort. Another novel idea is Uvex Magic- they use a battery and the VALiD lens technology allows user to instantly change lens tint.


