Had problems last year with my snow machine helmet full face visor fogging up. Shot a moose off the Rex and when we left it was -22 and my visor lasted about 12 miles before it was partially fogged beyond a quick fix. After 35+ miles it was useless. Brought goggles with me for trip out, which were fine minus the minor frost burn where I did not have complete protection with the goggles. Anyhow I had a Skidoo some time back with the defrost system, which worked very well. I figure I could get them at Eagle River Polaris, AMD, or other places but I wanted to compare some possible on line sources before I went into the local places and checked them out. Does anyone have a recomendation and possible a url or some place that sells them? A little googling and I was not able to come up with any thing other than a few good places to buy helments.