Tried these out in Val Thorens recently(Nov 2010). They work very well. The only time they steamed up is when I stopped for a while, but moving off restores the airflow and they clear quickly. I used them in sunshine - very good, and with snow falling, where they provided decent protection. The ability to choose either side-arms or a stretch band fitting means that they will work with soft hats or hard helmets. To sum up, the performance and quality is very good, especially when you think of their price.