The Ten Essentials: The Core Safety Systems for the Outdoors
The Ten Essentials are a list of the core categories of gear that hikers and climbers should carry to stay safe and self-sufficient in the outdoors, especially if a trip goes wrong or they're forced to spend an unplanned night out. Originally a literal list, the modern version is organized as ten 'systems': navigation, sun protection, insulation, illumination, first aid, fire, repair kit/tools, nutrition, hydration, and emergency shelter.
