No matter what the romantics write, food and sleep are the two main pleasures on a hike. You can get stuck in swamps all day, wade knee-deep in cold water, cross bone-chilling rock slides, and yet feel absolutely happy, falling asleep in a cozy, warm sleeping bag while the wind howls behind the thin walls of the tent. Hence one of the main commandments of a tourist follows: choosing a sleeping bag is no less important than choosing a travel companion. The task becomes more complicated if the sleeping bag is shared, but more on that below. [...]