The pattern is Jared Flood's Koolhaas. It was knit on US6 and US8 circs.
I loved how this turned out! It also gave me an intro to needle free cables. The styrofoam head is a bit on the small side. The hat isn't oversized!
Note to Elves: The Shibui Merino Worsted isn't on my 'recent items' list to link up... but this was a TLE purchase. :-)