Great reference for hat sizes! - Hat sizing chart Age (Diameter of circle) Newborn in) months in) months in) Toddler/Sm Child Adult Woman Age (Finished Length) Newborn months Toddler/Sm Child Adult Large Adult
Ravelry: Fast and Easy Cowl pattern by Margaret Zellner. This large loopy moebius cowl in worsted weight is fast and easy to make. 200 grams worsted wt yarn, and size needles. Uses Cat Bordi's Moebius Cast On.