Buy the specific yarn from www.1azcolorworks.etsy.com, selecting the TTS 66 weight (66 yards/50 grams.)

For the striping pattern given, purchase 3 skeins for the newborn size, but if working the 3-month thru older children size, another skein of Ecru will be needed.

If making newborn hats, you will have enough left of the two colors to make a second hat, IF you buy a second skein of Ecru.