We have been buying Sunday Afternoons Hats for our whole family for YEARS! This is a great hat! I have a large 3 year old - his head was right at the line between the 2 sizes and I opted for the Youth large and it was a great fit! The adjustable strap makes it almost impossible to go wrong with size and this will grow with him into next summer and beyond I'm sure! The quality is excellent! I expect this to wear just as well as my own hats and my husbands hats that are years old now! Thanks Sunday afternoons! You are the BEST!!!  P.S. Really cute arrow pattern too! :)