Football Party Zone Foil Balloon 29 . There is 1 foil balloon in a pack. The balloon needs helium to be inflated. It is automatic self sealing.There is 2 sides printing.The size is approximately 29 inch or 73 inch. Balloons will arrive uninflated. You need helium to inflate the balloons. WARNING: CHOKING HAZARD - Children under 9 years old can choke or suffocate on uninflated or broken balloons. Adult supervision is required. Keep uninflated balloons from children. Discard broken balloons at once.