I've worn it a few times and kept it, but I'm selling it because I don't use it. The material is perfect for autumn! Head circumference laid flat: 17cm Height: 14cm Depending on the size of the child's head, I think it would be good for children around 1 year old. *Adjustable with the folded part I bought it from a Korean clothing online store. Would be great for those who like overseas children's clothing brands like Tinycottons, Bobo, Marpies, Adidas, The North Face, etc.