BinkyBro's Snapback Hat's are a stylish option for your little one. Snapback hats are adjustable in the back. Their Snapback hats are true-to-size based on the child's age. What this means is the average sized kid--about 50% on the growth charts--is used as the barometer for head circumference. If you have a child whose age fits evenly between the ranges below or you know is larger than average, it might be best to size up rather than to size down. Sizing: Baby: 4-12months Toddler: 1-3 years Youth: 3-6years