I went the cheap route and just used Rain X anti fog. My helmet is full faced mx and I didn't think they made a shield for it. Would get too scratched up anyway.

 

don't use the Rain-X anti fog, it doesn't work. I used it on my $20 scott goggles and it doesn't work, and I even used a good amount of the stuff and applied it a couple of times. just go out and spend the money on some good ski goggles, they are made not to fog. I bought a new bieffe snow helmet off dennis Kirk and it came with a breath guard but I still put the anti fog on the lens, it doesn't fog as bad as my goggles but that is due to having the breath guard. I would say go on www.denniskirk.com and get a new full face helmet. I paid $60 plus $6 shipping for a total of $66.00 and it was well worth it. just remember to go up a size from your dirt helmet. I wear a XL in dirt helmet but when I got my snow helmet it was tight due to the extra padding. I gave that one to my wife and ordered another of the same helmet in an XXL.

 

Yeah, that spray stuff doesn't work.

 

I went with scott turbo flow goggles for riding snowmobile with a motocross helmet. I ended up taping about 3/4 of the holes closed because of getting too much new air into them (removing moisture / fog). I have never fogged up (moving). You might fog if you still still for a few minutes but once you start moving the air between the two panes clears the fog. About $30 for the goggles.

 

mine used to fog up, i bought a pair of those quick straps by Scott and there real nice, its nice to be able to pull them off quick and just let them dangle there when your not riding, so if u just cruisin along u can take em off and if your haulin A$$ then put them back on again, the velcro holds up good to