Dalix Childrens Trucker Cap is Perfect for Outing with the family, or every day use when they are out in the sun. Baseball leagues and any special ballgame mix and match your favorite teams. Features a 5 panel design with a mesh adjustable snapback back, light-weight, well ventilated. This is sized for adolescents with head size are 54 CM or 21" in Diameter, with an adjustable strap of about 3-4 Inches less or more ( so between 18-23")