Here is an adorable reversible sun hat by Posh Papoose!  It's handmade in the U.S.A!  This is a size Medium amethyst and light pink organic cotton hat. 

These unique reversible sun hats provide ample sun coverage and grow with your child, with 4" of stretch in the back of each hat. Colors are even prettier in real life. 100% Cotton. Gentle cool wash. Tumble dry low.

SMALL: 15" - 19" (fits approx 3 mos - 12 mos)
MEDIUM: 18.5" - 22" (fits approx 9 mos - 5T)
LARGE: 21" - 24" (fits approx 5T - small adult))