Colorful celebrations are around the corner with our Foil Rainbow "Happy Birthday" Letter Balloon Banner. This kit comes with 13 foil letter balloons measuring 14 oz each and 14 ft of twine, making it perfect for a birthday party. To assemble the banner, fill each self-sealing balloon with air and use the attached tabs to string the word “Happy” onto one strand. Then, string the word “Birthday” onto the second strand. You can hang these banners side by side of one over the other on your party wall, behind a party table, or as part of your photo booth backdrop. Party with all the colors and shop the rest of our rainbow party supplies.