Knit Cap - Kids - Free Size - Yellow ⭐︎ Although it's free size, we bought and used it for our children when they were 3 and 4 years old. I think it can fit a wide range of head sizes because it's knit and stretchy. There's a button to fasten under the chin. The two buttons on top are for decoration and don't come off. I've included a photo of a stuffed animal wearing it to give you an idea of how it looks. Thank you for looking!