Elevate your parties style using our 34" giant foil rainbow number 4 balloon! Measuring 34 inches when fully inflated, this giant number balloon is sure to stand out at a milestone birthday party. Inflate this number FOR balloon with helium, and use curling ribbon to tie it down to a piece of furniture or a balloon weight. No matter the guest-of-honor's new age, you can combine it with any of our other rainbow number balloons. Find more ways to bring the color to your bash shop the rest of our rainbow party decorations.