Child Teen Ladies Hat height6” 6 ½“ 7 ¼ “ 15cm 16.5cm 18.5cm Hat circumference16”-18” 19”-21” 21”-23” RequirementsUK Aran, USA worsted (4), AU 10ply35g 40g 60g 1.2oz 1.4oz 1.8oz Knitting needles UK 3.75mm USA 5, and UK 4mm, USA 6Tension/gauge - Using above yarn and 3.75mm needles over st st, 10sts x 14 rows to 2"(5cm)