Jay, I must be a wimp. I remember attending a session at Kimball Junction for the Swanner Nature Preserve people. There were about 5 of us, including our esteemed out going club president (RF). I was wearing my Sorrels (with the extra inner felt liner under the foot--very much recommended), insulated Carhart coveralls, fleece lined pants, don't remember about the uppers, but would guess a wool shirt and a fleece over that, my ski hat (you lose more of your body heat through the uncovered scalp than just about any where else on the body), my duck hunting mittens (which have a slot across the palm to let your fingers out--and I had my silk inner ski glove liners on them!). Anyway, I think it was about -5 F when we closed down. It was so cold I could not loosen the bolts holding my Nexstar to the mount (I added an Allen wrench to my 'scope tool kit), so, just closed the legs and put the whole rig into the back of the Yukon. Comfortable? I just about froze my butt off! That, of course, was due to lack of movement. If I had had to walk, or do something like snow- hoeing (typo, but it begs the question: ever try gardening in the winter?) Any form of exercise would have had me shedding clothing. Been there, done that. 73, lh