Minion-designed backpack plush with cute mini plushies. The Minion keychain is just attached, so it can be removed. I bought these in various places when my child was small and dressed up as a Minion. I don't know the hat size, but my child wore it when they were 3 and 4 years old. Adults can also wear it. It's also adjustable. How about it with the overalls I'm also selling? You can cosplay for Halloween. It may be compressed for shipping.