(actually fifteen; well, maybe twenty)
Recently, REI updated the 10 essential list. For more information see: http://www.rei.com/expertadvice/articles/ten+essentials.html
Updated Ten Essential “Systems”
- Navigation (map and compass)
- Sun protection (sunglasses and sunscreen)
- Insulation (extra clothing)
- Illumination (headlamp/flashlight)
- First-aid supplies
- Fire (waterproof matches/lighter/candles)
- Repair kit and tools
- Nutrition (extra food)
- Hydration (extra water)
- Emergency shelter
Strongly Recommended – may be some duplication below
- full water bottle + water treatment
- ground insulation (sit pad)
- emergency blanket
- signaling devices – whistle/mirror
Special Environments
- shovel (snow)
- stove with fuel
- a pan and cover
- avalanche cord or avalanche transceiver
- rescue pulley