Pattern is now updated!
Yarn required 1 (1.5, 1.75, 2, 2.5) oz of worsted weight yarn.
A note about sizing: Kids’ heads are a lot bigger than most adults expect, especially in how long you need to make it before starting the decreases at the crown. Case in point: my 4.5 yr old, 6.5 yr old, and I all wear the youth size! Your family may vary, but I’d suggest you make the larger side when in doubt. The hat is designed to be stretchy and should help with fit.
I would recommend the child hat for a 2-4 yr old and a youth (which is also the adult small) for 5-preteen. We all like our hats to come down to our earlobes, so the hat is designed with that in mind.
Pattern update includes brim ribbing for medium and large sizes to prevent curling of the edge.