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Clothing (protection (sun (we need to ensure that we do not become…

- - - - we cover our skin with either clothing or sunscreen.
  - - - we need to stay cool, so we use protective wear to ensure we don't overheat
  - - - an external shell can be used to stop the wind from reaching our skin
  - - - too much moisture will decrease your body temperature
        
        decreased body temperature means hypothermia
        
        this is a risk no matter the temperature
        
        sweating can easily create this problem
        
        we want to make sure any sweat is moved away from the skin. See base layers
  - - - hands
        
        gloves
        
        better for gripping
        
        colder than mittens
        
        separation of the fingers prevents them from warming each other
        
        mittens
        
        warmer than gloves
        
        keeping the fingers together will help keep them warm
        
        keeping them dry
        
        gloves with waterproof lining will often make your hands sweat
        
        gloves without an waterproof lining are more breathable
        
        but if you put your hand down in snow or some other kind of moisture, your hand will warm it up and the glove will get wet and reduce your temperature
      - head
        
        classic hat/ touk
        
        keeps your head warm, not usually very breathable
        
        your forehead/ temples will sweat easily with activity
        
        great for high exertion activities in cold weather
        
        bandanna/ ear warmer
        
        keeps ears warm and covers major heat loss areas like forehead and temples
        
        balaclava
        
        covers everything a touk does, plus the face and neck
        
        great for extremely cold weather, high winds
        
        many/ most cover nose and mouth: can constrict breathing
  - - - ice, snow, rock, trees and other vegetation, sand and dirt, etc
- - - - light, comfortable, breathable
    - - gets wet, stays wet. not good for colder climates
  - - - stays warm even when wet
    - - heavy, doesn't compress easily
  - - - warm, compactable
    - - doesn't dry quickly
  - - - light, dries easily, compactable
    - - can trap moisture
  - - - water proof
        
        nothing can get through it: not the heaviest rain, sleet, etc
    - - water resistant
        
        can stand up to light-mid rain, snow, etc
- - - - not all substances have equal conduction ability
        
        see dead air space
        
        i.e. water vs air
        
        how cold does 50 degree F water feel?
        
        how cold does 50 degree F air feel?
- - - - acts as a second skin
      - keeps moisture (sweat) away from your skin
        
        water conducts cold better than air (think about dead air space)
        
        moisture on the skin means the skin cools
        
        skin cooling means lowered core temperature and decreased ability to thermoregulate
  - - - the warm air acts as an insulator
      - creates a buffer between the warm and cold materials (conduction) and between the warm and cold air (convection)
  - - - keeps wind, rain, sun off your body and clothes
  - - - you want to hold onto your heat, but not so much that you're filling your clothes with sweat
        
        sweat will make your clothes wet, which will lead to drastic cooling
        
        see base layer
      - letting heat out will keep your temperature below your clothing from getting too hot