Originally Posted by
ryan786i
I use a
wool Buff to keep warm in the winter, which isn't very bulky under the helmet and generally can be worn so that it won't obstruct vision as well. Plus, bonus face protection when you wear it as a balaclava. I use the lightweight one linked above because it was what they had two years ago, but they offer a midweight one now that I'll need to pick up; then I'd probably be comfortable (at least around the head) into the low 20s.
For waterproof/resistant head coverage, I got nothing. I don't have hair so I usually just roll with it.
I bought one of those from a recommendation here. Maybe it was from you. I wore it just about every day this winter, on and off the bike. It is one of my best clothing purchases this year. It is extremely thin, and it's amazing how it's useful in a huge range of temperatures. You can use this as a hat substitute. I use it as a scarf substitute most of the time. Sometimes I'll wear a hat and then pull the Buff over my head and around my jaw. I look like I'm wearing a hijab. It is immensely comfortable.
Also, this raises a point about waterproof hats and hoods. I think it's better to wear something that isn't waterproof but is comfortable when wet, and there is nothing better than merino wool. I get wet, but I don't get cold.