No Boundaries Juniors Rainbow Tie Dye Lace Racerback Tank lace racerback tank top rainbow tie die front swirl, plain back very sheer, bralette or layering recommended 86% polyester, 14% spandex Women's slim/junior/teen sizing. Small: 17" flat across chest, 22" long. Medium: 18" flat across chest, 22" long. Large: 19" flat across chest, 23" long. X-Large: 20" flat across chest, 23" long.