Our Digital 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 Black Number Balloon No. 5 arrives uninflated and measures 26 inches on inflating. To inflate it with helium please visit your closest Wanna Party store or contact any helium gas provider near you. Pack of 1.