100% of the purchase price of this pattern for the month of May 2013 will be donated to the people of West, Texas to help as they try to rebuild their town after the tragic explosion. This hat was designed for Delaware Head Huggers. This model was knit with super bulky 6-weight yarn, using size US 13 circular needles. The pattern has instructions for chunky, worsted and sport weight yarn, including how to adjust the measurements for different yarn weights and how to adapt the size.