This 18" Satin Happy Birthday Banner Foil Balloon from Anagram International, Inc. is the perfect way to say "Happy Birthday"! This foil balloon features a shiny satin finish and a "Happy Birthday" banner design. It is sure to add a touch of celebration to any birthday party. The balloon measures 18" in diameter and can be filled with air or helium. It is also designed to be reusable, so you can enjoy it for years to come. Bring a bit of color and fun to your next birthday celebration with this 18" Satin Happy Birthday Banner Foil Balloon.