From the book:

“A stunning knit, this square hat is a paradox. Both sophisticated in style and whimsical with its pointy cat-ear corners, this hat speaks to our grown-up selves without giving up on our playful sides!

Hat is worked in rounds from bottom edge to top seam. The hat will be seamed from the outside with a three-needle bind-off.

Finished Measurements
Circumference at brim band 17” (43 cm) unstretched, 8” (20 cm) in length from brim edge to crown; will fit head circumference of 20” to 23” (50.5 to 58 cm)“