Tents, Hammocks, Bivvis and Tarps
In extreme climates a shelter is your number one priority. In a survival situation, when exposed to harsh climates, one can perish in as few as 3 hours. Even in a non survival situation its comforting to have a place to call "home". So be sure to bring your shelter with you on your adventure, whether it be a tent, hammock, bivvi, or tarp.