My son has worn this hat several times as it's not quite summer yet so I'll try to remember to update it later. So far he likes the hat and says it's very comfortable. I like that the back is wider and covers the neck, and the chin strap helps keep the hat in place on windy days at the beach. As I'm having trouble finding the size chart (on mobile) I wanted to share the information from the label with those who are also trying to find the exact size. I bought the M for a 4 year old and it fits perfectly with little room to grow. If you are close to the next size up I would probably suggest
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