If someone doesn't beat me to it, I will have one up later this afternoon (4pm PST). It comes down pretty low. A good collar on a flight suit should overlap it a bit......I think.
mhlayne - Sorry I dropped the ball on this a couple days ago. Here are a couple of pictures showing how low the balaclava goes. This is an ASOK helmet with Chucko's Helmet Skirt. I hope this is what you needed. Again, sorry for the delay.