Worked with Socks That Rock Heavyweight (Blue Moon Fiber Arts) which is about a sport weight. Or DK weight. I don’t know. The colorway is Chanticleer (nice for fall). I’m working it on a 16″ US 6 circular needle with a gauge (in stockinette stitch) of 5.5 stitches to the inch. Finished size is about 23″ circumference, which should comfortably fit an adult head but still have a bit of stretch if needed.
The corrected version of the pattern is now available on Ravelry.