A high percentage of your heat is lost through your head and hands. I bring three different pairs of gloves and more than three hat and scarf combinations to ensure I stay warm and dry in extreme weather conditions.
My outer mittens are by Mont Bell. My warm and utilitarian gloves are made by Columbia. My hats are always made of fleece (not wool) so they breathe and stay dry.
Thank you to Tasha Van Zandt and Sebastian Zeck for producing the Solo 2015 Expedition video series . Photo and video credit: Tasha Van Zandt http://tashavanzandt.com