I think this experiment offers a glimpse into an area that might deserve looking into. For example, a breathable weave of that reflective coating on the inside

I think this experiment offers a glimpse into an area that might deserve looking into. For example, a breathable weave of that reflective coating on the inside of a tent might make it warmer rather you use a campfire or not and reduce condensation when compared to my garage built proof of concept made with off the shelf materials. As to places where you can't have a campfire, I addressed that at the end of the post. One of the things I didn't really talk about, but did show in the video a couple times, is that reflective bubble wrap I use for the floor of the tent. That stuff makes a great pad for under your mattress pad or bag. It makes a huge difference when you're sitting or sleeping on cold ground and it protects your mattress from rocks and other small sharp hole poking stuff, folded up it makes an awesome pad to sit on, and it's pretty light.