from the pattern website

Finished Size:

Wee Noggin - 17.5” (45 cm) circumference, 6.75” (17 cm) brim-to-top
Normal Noggin - 22” (56 cm) circumference, 8” (20 cm) brim-to-top
Big Noggin - 26.5” (67 cm) circumference, 9.25” (23 cm) brim-to-top

The pattern is written for Wee Noggin with changes for Normal Noggin and Big Noggin in parentheses.

Earflaps - 2.4” wide x 3.5” long (6 cm x 9 cm)
Pigtails - 8” (20 cm) long