Our ability to camp 365 days a year largely depends on the options how to keep our (rooftop or other) tents warm. Well, sleeping bags intended for below -30 temperatures do exist, but freezing your nose and face off if they’re protruding from the sleeping bag isn’t really the perfect idea of nighttime comfort. And being wrapped up in your mummy-bag doesn’t really leave space to do anything but sleep while in the tent. So what are the options of improving tent-life quality in cold places?