Knit this classic aviator hat with snuggly ear flaps to keep your little one cosy this winter. Easy to follow instructions for you to knit this aviator hat in either one colour or a two colour stripe. Rowan Pure Wool DK is recommended. To Fit Head Circumference: Newborn (30cm), 2-8 mths (34cm), 8-24 mths (38cm), 2-5 yrs (43cm)