In article , zatatime
writes:

These things work great, just make sure they're on the outside of your
socks.

I used 'em a bunch flying Cubs in the winter. For some reason if your
feet are warm your whole body feels a bit warmer.


Boy Scouts say, "if your feet are cold, put on a hat."

Much of your heat loss is via the head, so don't forget the hat in winter.

Chuck