Bucket and Brims Hat
I call this a bucket and brims hat, because while I was knitting it, it looked odd and reminded me of a bucket head with a brim. But, once finished, the bucket shape disappears, and the hat looks much more normal.
This hat fits tightly around the head, and can be unisex. I suggest doing a rolled up brim for a guy and a crocheted edge for the gals.
One slight correction - I incorrectly calculated the total number of stitches if you choose to knit an extra round for a larger sized head. The pattern file has been corrected.
For larger head, add an extra round of * k9, kfb * for 66 stitches total (not 72). Knit another round and continue to the turn of crown and the end of the pattern.