The number three has mystical and magical meanings in many different cultures; in this project, it uses crochet mathematics to create a hat. Three and numbers divisible by three merge to create a modern midcentury vibe, and the crossed treble crochet stitches add a unique look.

FINISHED SIZE 22” in circumference and 8½“ tall.
YARN Blue Sky Fibers Alpaca Silk (50% alpaca, 50% silk; 146 yd (133 m)/1¾ oz (50 g)): #100 slate, 1 hank.
HOOK Size G/6 (4.25 mm). Adjust hook size if necessary to obtain correct gauge.
GAUGE 17 hdc and Rnds 1–6 = 4” diameter in patt.