Disney Juniors Ariel Sequin Racerback Tank Top Disney juniors Little Mermaid tank features Ariel with sequin embellishments scoop neck, racer style, solid color back 66% polyester 34% rayon, lightweight jersey fabric. Officially licensed. Women's slim/junior/teen sizing. Small: 15" flat across chest, 23" long. Medium: 16" flat across chest, 23" long. Large: 17" flat across chest, 24" long.