A double layered sockweight yarn hat creates a thin
gauge hat with two layers. It is totally reversible with
the second layer knit identical to the first side, then
folded in the center of the ribbing section that is worked
first, and one layer is tucked inside the other. Lots of
warmth, and two looks in one if worked in different
yarns for the two sides. Use your imagination and use
up your leftover bits of sockyarn!