Our Metallic Number Balloons are perfect for a glamorous party or event display! Combine this number balloon with other numbers for a custom look at graduations, birthdays, New Year?s Eve, and anniversaries. This self-sealing reusable Metallic Gold Number Balloon No. 7 arrives uninflated and measures 18 inches on inflating. To inflate it with helium please visit your closest Wanna Party store or contact any helium gas provider near you.