I would think that unless you have a lot of drafty air in your tent that it would still be warmer than most similar set-ups. I've haven't tested mine to see if the inside retains more body heat than other materials do, but it would seem that, at least in theory, they should, and that smaller designs would be warmer than bigger ones.

I'm going to do some experimenting with using candles to heat my tent too. I'm not sure I'd want use them while backpacking, but I'm interested in finding out if the tent can retain much heat from them, so I'll be testing it in my backyard first.

I mostly backpack in cold weather. Now is prime time for the Ozarks. No ticks, chiggers, mosquitos, or poison ivy to worry much about. But the nights are long, and the mornings are cold, especially if you're camping in the bottom of a hollow near a creek, which is usually where I camp.
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