Hat is worked in both “Fair Isle” and “Twining” - so that whether working in 1 color or 2, the hat is double in thickness through out. Twining is simply using 2 of the same color yarn at the same time and twisting the yarns around each other in the back for warmth and wind resistance.

Also available through:
Webs yarn:
http://www.yarn.com/index.cfm/fuseaction/product.detail/c...

Patternfish:
http://www.patternfish.com/patterns/2139