Gauge: 18-19 stitches in 4in/10cm in stockinette stitch
The hat will fit most teen to adult heads (head circumference 54-59cm / 21in – 23.5in).

You will need: yarn (up 120 grams), knitting needles to obtain the gauge (please make a gauge swatch!), darning needle to weave in the yarn ends and to sew the back of the hat.
The hat is knit flat.