【Size Notation】 ONE SIZE Can be worn by adult men and women. 【Actual Size】 Head circumference 19cm x 2 (flat measurement inside the ribbing) The popular pom-pom knit from last year is still in demand. This is an official item from the Seattle Seahawks, an American football team based in Seattle, Washington, USA. Made of acrylic material, it doesn't feel scratchy and is easy to wear. Great for adding a pop of color. If you have any questions or concerns, please feel free to contact us.