Pink Elementary School Graduation Caps. Bestbuttman provides best quality shiny pink elementary graduation caps at super low prices. The elementary graduation pink cap fits comfortably and is made from the same high quality tricot fabric as the Bestbuttman graduation shiny gowns. The cap mortar board is 9.4"sq and the headband is designed with durable elastic for flexibility to fit all elementary school graduates. View the elementary school gowns and check out the vast selection of tassel colors and customize your outfit for the perfect elementary school ceremony.