Well, as most tents aren聮t insulated, heat retention will always be a problem. And a lot of them do have quite a bit of mesh, because they聮re most often used in the summer when ventilation is the bigger challenge. The Eureka! Headquarters ($360), for instance, is big enough to sleep six, but has mostly mesh doors.
Cabela’s Outfitter Wall Tent
Outfitter Wall TentPlus, 10聮x18聮 is a huge tent. They聮re really not that common. I think your best bet will be to get a canvas outfitter tent. These tend to hold heat better than a light nylon-and-mesh tent and have fewer (if any) windows and mesh panels. Take a look at Outfitter Wall Tent in the 12聮X17聮 size ($800). It聮s a real palace with lots of room for double beds, duffels, clothing, gee-tars, and more. It聮s very sturdy and weatherproof, as well. As a bonus, you even could add a Cabela聮s Tundra Takedown Stove for use inside the tent (it聮s equipped to take such a stove). The stove is $230. How cozy would that be?
Of course, this isn聮t a tent you take backpacking. It weighs 80 pounds, and the stove would add another 40. Plus, do take care with storage. It聮s canvas, so if stored damp it can mildew like a champ, even with its mildew-resistant treatment. Dry it thoroughly after use, and store it loosely where it can ventilate well.
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