This super simple messy bun hat starts with a band of third loop half double crochet worked to desired length to fit the head. Short ends are joined with slip stitches, then half double crochet is worked from one side to make the rest of the hat.

The top is left open for a bun or ponytail to peek out.

Pattern is sized for an average-sized adult woman (head circumference 22 inches/55.88 cm, brim size is 21 inches/53.34 cm) but pattern explains how to customize for your desired size and gauge.