The only problem I have is that my helmet and glasses fog up when it get's very foggy or cold. I have tried everything, but so far the only thing that has worked is keeping the visor up. Not fun when it's below zero...
EICMA changed that when I found the Zeibe.es stand. I got a sample of their helmet anti fog product which worked very well on my glasses so I ordered a set of their long lasting anti-fog treatment. It worked perfectly today on my helmet visor and glasses. I don't know if it will last the advertised two weeks, but I'm very happy so far.
It really does work as well as the demo video shows:
