Pattern details..
Harlow is an impressive, highly textured diagonal basket weave pattern that looks much more difficult to execute than it actually is. If you can make basic cable, you can make the Harlow. I would consider this an intermediate pattern.

Finished Measurements
S/M: Circumference at brim band 18” (46 cm) unstretched, 8” (20 cm) in length from brim edge to crown; will fit head circumference of 20” – 21” (50.5 cm – 53 cm)

L/XL: Circumference at brim band 20” (50.5 cm) unstretched, 8.5” (22 cm) in length from brim edge to crown; will fit head circumference of 21” – 23” (53 cm – 58 cm)

Yarn
S/M: 120 yds (110 m) bulky weight #5 yarn (shown knitted in Cinnamon, Willow Yarns Burrow Bulky, 75% acrylic, 25% washable wool, 131 yds/120 m per skein)

L/XL: S/M: 131 yds (120 m) bulky weight #5 yarn (shown knitted in Page Grey, Willow Yarns Burrow Bulky, 75% acrylic, 25% washable wool, 131 yds/120 m per skein)

Needles and Other Materials
One 16” (40.5 cm) circular knitting needle size US 7 (4.5 mm) or size needed to obtain gauge
One 16” (40.5 cm) circular knitting needle size US 13 (9 mm) or size needed to obtain gauge
US 13 (9 mm) set of 5 double-pointed needles or size needed to obtain gauge
Stitch marker
Cable needle
Scissors
Yarn needle