If your that cold.....could be a safety issue. What if the lift stops for 30 minutes ...or.....you have some sort of injury and have to wait on an evac? I see way to many people who are wearin' as little as possible. Down, wool, mittens, hood on jacket are all good. I know they make ski "shorts" for the racer crowd. They zip on and off, and insulate ass from seat. Racers use them 'cause they wear those sweet onesy skinsuits!