To fit an average adult's head
Some of the printed patterns erroneously indicate that each ball of Fourteen is 100 grams. The correct weight is 50 grams per ball. The number of balls of yarn needed, however, is correct.
Please note the following revision:

Rnd 2: Ch 3 (counts as 1 dc here and throughout pattern), dc in same st as ch, 2 dc in each st around. (32 dc)