This pretty blue hat is sized for a smaller head. It has a 20" circumference, and is 6.5" in length (from the crown to the rim). It is made with a very soft, stretchy and durable Italian-made silk yarn. In can stretch up to 24" comfortably. This is a very cute and comfortable hat for adults, teens and kids. I will happily consider a custom order for a specific size and/or color.