Llama Battle Royal Foil Balloon 33″. There is 1 foil balloon in a pack. The balloon needs helium to be inflated. It is automatic self sealing. The size is approximately 29 inch x 33 inch ( 73 cm x 83 cm) .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.