These short brim hats are ADORABLE, however, I measured my little guys head as I was sure it was too big for the short brims but then was surprised to see that he still had half an inch of growth room. But when I received the hat, it was definitely too small. However! The return/exchange process is super simple and free! I was disappointed that the hat didn’t fit but being able to exchange for a snap back in the next size up made it better. I do wish they made the short brim for up to a year old as my little guy is just huge for his age and would be nice to put him in a soft brimmed hat instead of the snap backs which aren’t as forgiving when you have erratic body movements