A charted colorwork hat in sport weight yarn with a wintery diamond and tree theme.

Yarn: Cosymakes Rainbow Chard Light or Snapdragon Sport, 120(130, 140, 150) yds 109.7(118.9, 128, 137.2) m and 50(55, 60, 65) yds 45.7(50.3, 54.9, 59.4) m of a contrasting color

Needles: size 4 US 3.5 mm 16 in. 40.6 cm circular and double-pointed needles of the same size, or whatever size needles you need to get gauge

Gauge: 6.5 sts and 7.5 rows per inch 2.5 cm, after blocking

Sizes: Circumference 18.5(19.5, 21, 22) in. 48(49.5, 53, 55.9) cm choose a hat size 1-2 in. 2.5-5 cm smaller than your head