DALIX Childrens Trucker Cap is Perfect for Outing with the family, or every day use when they are out in the sun. Baseball Pony leagues and any special MLB game, 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") Save big on this 12 pack dozen deal. Save big on this 12 pack dozen deal. Perfect for summer barbeques and days out by the beach or lake, or simply when you don't feel like doing your hair.