I attended Arctic Survival School on Eielson AFB several weeks ago. The tempatures were forcasted to be in the negative 40's. When I was issued my bag I noticed it said Wiggy's on the tag. Our instructor told me they wouldn't use anything else. No tent, no heat, just me and my Wiggy's bag for several nights in a hole in the snow. Those who say these bags are no good...come on out in yours and let's put it to the same test. I don't know Marc but when we spoke on-line he invited me to his store and offered that discount he spoke of...I didn't ask. That's straight up to me. Just my two cents on my first visit to this site.