Originally Posted by
mercator
Mostly this:
For colder days,
this.
I have never ridden in conditions cold enough to warrant both, but I suppose it could be done.
What is "cold"?
I'm have very similar stuff, I have a Smartwool skull cap and
this balaclava - I will wear both the skull cap and balaclava under the helmet and ride temps down to -20F. I shared this a few times... but I can't stop posting it: