I got one of these last week (70 grade) and I'm sure everybody will be like "DDUUUUUUUHHHH!" but wow they're great. No more opening my shield at red lights because of the fogging inside the visor... it hasn't been super cold here in MD (yet) but it's usually around the mid 30s in the morning when I go to work, and without it fogging was an issue. Now, no more. I still occasionally get a tiny little bit of fog depending on my head orientation (looking behind me for example) but as soon as I look straight it's gone, so as long as I don't go full mouth-breather mode, it's awesome!