This hat fits my two and a half year old perfectly. If her head gets much bigger, it won't fit, so I'm sure by next year we'll have to give it away. One thing that surprised me is that the straps are removable. I like that the straps have a clip, whatever it's called, to secure under the chin, rather than velcro closure, which makes my toddler itch and want to remove her hat. Excellent quality.