Elmo Sesame Street #1 1st First Birthday Party Supply Balloon Mylar Latex Set You will receive 13 Latex and Mylar Balloons: (1) 40" Red #1 Mylar Balloon. (1) 20" Elmo Head Shaped Mylar Balloon. (2) 18" Elmo Happy Birthday Mylar Balloons. (9) 11" Latex Balloons...(3) Red, (3) Yellow, and (3) Blue.