Doll sized hats (designed to be used on American Girl dolls) are 9 1/2" diameter.
Children-adult 13" and 15" diameter straw hats. All have a crown 1" high. All can be shaped with water and dried in the desired shape or can have the edge sewn with millinery wire and then shaped. Using clear acrylic spray can also be used to "set" the shape. One size fits all. These need decoration and ribbon added to stay on the head or use a hat pin.