In outdoor equipment terminology, a 3-season tent is one which is suitable for the seasons of spring, summer and autumn, while a 4-season tent is suitable for all 4 seasons of the year, including winter or extreme conditions. Winter conditions are harsh. So are conditions on the exposed ridge of a mountain, or having to spend extended periods being self-reliant in a remote area. When people think of a 4-season tent, they are visualizing a design which prioritizes durability a