>>2794280To be clear: regardless of what material your tent is made out of, it won't keep you warm by itself. The heat retaining performance between canvas and poly materials is so insignificant because hot tents are usually very thin. If you want a shelter that will keep you warm passively, you need to specifically get something purpose built for that, like the one in the picture by Crua outdoors.
Some people call those "insulated tents" as opposed to "hot tents". "Insulated tents" are usually not very spacious and extremely heavy, often heavier than a hot tent + stove combo because you're basically carrying a tent shaped/sized synthetic sleeping bag. These will help keep you warm by themselves if you seal em up, but it's a totally different experience than sleeping in a hot tent. They're also very expensive, the one pictured is a 2 person only and it costs $400. I got my first tepee and folding stove for that much.
