I love my 509 goggles and 509 evolution helmet, they are a perfect combination and I never got cold, and I was up in the UP that one weekend last year when it was below zero for highs the whole time, and like -20 at night. Other guys I was riding with had full face and different open faces, and they got some frost bite. I was perfectly fine. Very good combination I have a set of black ops polarized aviators for the daytime, and a set of sinister x5's for the night time. I ran a Arctic Cat open face last year some, with the 509 goggles, and that worked good as well.
The modular ski doo helmet is probably the best full face helmet though IMO. I had a arctic cat txi helmet a couple of years ago, and they fog up really bad, If you don't have an electric shield with one of those on a cold day your gonna have a miserable day of riding.
The modular ski doo helmet is probably the best full face helmet though IMO. I had a arctic cat txi helmet a couple of years ago, and they fog up really bad, If you don't have an electric shield with one of those on a cold day your gonna have a miserable day of riding.