Totally love this hat!!!!! Pattern is called Hineri and is a free pattern found HERE. I used one of my most favourite bulky yarns - Rowan Cocoon in the Slate colourway. I used one ball and about 4 rounds of yarn from the 2nd ball...The pattern states you need one ball, but for me, I needed the 2nd for just a titch of yarn. I used size 6mm circular needles and knit it in about two days.
My forearms were killing me after knitting this hat - I think the speed and thickness of the needles contributed to the pain. I wanted to wear the hat ASAP and my hands and arms always hurt after knitting with larger needles.