Originally Posted by
Cone Wrench
I use the same helmet, but I put on a waterproof helmet cover to cut the wind and use an ear band specially made to fit under a helmet. My head stays cozy even at -20C
The coldest I've ridden in the past two years is 5°F, -15°C.
I tried the Louis Garneau helmet cover, and it was just too hot and sweaty for me. I sweat mainly from the head, so I always need some ventilation. I have a winter weight cycling skullcap which also covers my ears, but down below 15°F, -10°C, I need a little something more, so I was thinking a little less ventilation.
Now truth be told, what's really happening is that I'm trying to justify buying an additional helmet. I've learned that falling on the fancy ultra-ventilated ones that I like in summer is an expensive proposition. And Nashbar has one that matches my bike for $30.