Set of 12 ~ LARGE DOLPHIN MYLAR BALLOONS 20" ~ Green, Purple, Pink and Blue 1 Dozen Dolphin-Shaped Mylar Balloons. Balloons Measure 20 Inches. Balloons come in GREEN, PURPLE, PINK, AND BLUE!! Accent These Balloons With Solid Colored Balloons! Gives a Fun Festive Look To Any Party!!