The Kids' Interstate Hat features our highest crown and has a broad, seamless polyester foam front plus a decorative cord on the bottom-front panel. To keep kids from being hot heads, the five-panel design has a polyester mesh back to circulate airflow, and the flat brim is made of 100% organic cotton canvas with a moisture-wicking headbandwhat could be cooler than that? An adjustable snap closure in back secures the fit.