This Avengers Happy Birthday Foil Balloon is the perfect way to celebrate your special day. This balloon is 18 inches in size and is two-sided. It is made by Anagram and is self-sealing. It is a great way to add some extra fun to your birthday and make it extra special. The Avengers Happy Birthday Foil Balloon is sure to bring a smile to the face of the birthday boy or girl. It is a great way to show your love and appreciation for them. Get the Avengers Happy Birthday Foil Balloon today and make their special day even better!