This hat is worked from the brim up with my favorite Estonian lace stitch. The brim is double thick with an eyelet turning ridge that creates a decorative picot edge. An optional lining can be added after the main knitting is complete.

Outer hat gauge, blocked: One repeat of chart rnds 
 1–19 = 2.5” (6.5cm) wide by 2” (5cm) tall, on smaller ndls