You can create infinite designs using numbers. For example, the Grabo blue foil number 4 is the ideal complement for 40-49, among other numbers. Whether combined or on its own, you can use the number 4 balloon to decorate your premises, birthday, or other parties. The number 4 balloon is 40 inches, making it magnificent in whichever position you place it. The balloon is suitable for interior and outdoor use. Moreover, its cost isn’t too hard on your pocket.