Make your birthday celebration extra special with this Ice Cream Sundae Happy Birthday 23" Foil Balloon. This two-sided balloon is made by Anagram and is 18 inches in size. It is self-sealing, so you won't have to worry about inflating it. This balloon is sure to be a hit at your party and will make a great decoration. Celebrate your special day with this Ice Cream Sundae Happy Birthday 23" Foil Balloon from Anagram International.