I got a few Champion C3 shirts with hoods at Target last year. These are the thin base layer, the hood fits under the helmet. I have a PI baclava, and some name tubular stretchy thing, but I have found that anything that covers my mouth and nose causes my safety glasses to fog up. So, only thin hood under the helmet and the face gets cold. Oh well, I live in Texas, so there are only a few days below freezing. The thin hood keeps my ears from freezing and falling off.
dennyd