This hat pattern comes available in three different weights: Sport, Worsted, Bulky.

You’ll need about 4 ounces/113 grams of yarn in your preferred weight.

Needles:
Sport: US 6 (4.0 mm) - 16 inch Circ and/or Double Points
Worsted: US 8 (5.0 mm) - 16 inch Circ and/or Double Points
Bulky: US 10 (6.0 mm) - 16 inch Circ and/or Double Points

Gauge: Done with Stockinette Stitch
Sport: 5 sts = 1 inch/2.54 cm on US 6 (4.0 mm) needles
Worsted: 4 sts = 1 inch/2.54 cm on US 8 (5.0 mm) needles
Bulky: 3 sts = 1 inch/2.54 cm on US 10 (6.0 mm) needles

Additional Materials:
Tapestry Needle
Stitch Marker