Keep your party looking colorful with our 34" giant foil rainbow number "8" balloon. Whether they're turning 18 or 80, this 34-inch giant number balloon makes a stylish choice for a milestone birthday party. Just inflate this number eight balloon with air, and slide it onto a string though the tabs at the top. Or, fill it with helium, and use curling ribbon to tie it down to a piece of furniture or a balloon weight. Find more ways to bring the color, and shop the rest of our rainbow party decorations today.