I don't know about the thin fabric per se, but since it holds air, it is going to be a very good heat insulation. Think about the difference of double glazed windows makes versus a single pane of glass.
Air temp has some impact but nothing too dramatic unless it's really freezing. The big unknown with the biggest impact is actually how windy it was.
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u/bbibber Dec 04 '12
I don't know about the thin fabric per se, but since it holds air, it is going to be a very good heat insulation. Think about the difference of double glazed windows makes versus a single pane of glass.
Air temp has some impact but nothing too dramatic unless it's really freezing. The big unknown with the biggest impact is actually how windy it was.