can't even imagine what the wind chill must be at an air temp of -15 F!
I use duct tape around my wrist and waist, jacket has good overlap over my Windstopper balaclava, so no tape around my neck, same with pants & boots, In the beginning, I didn't use duct tape, but quickly found out -100 wind chill feels like a needle in a tiny leak. another thing I discovered, when gassing up remember to put gloves on if you took em off to run your credit card. I was lucky I was getting gas when I was returning from a ride and only had 3 miles with heated gloves would not warm back up
I try to limit speeds to 60 or less, even with a good balaclava, any faster and your helmet will feel like your head is in an ice cube
Oh ya! did I tell you that COLD AIR = FREE HORSEPOWER, snowmobiles run better the colder it is, same holds tru for bikes