Edition:Number 21Happy Brthday alphabet letter foil balloon with number foil balloon. Best balloons for Brthday decoration. Best Brthday decoration item for boys and girls. Package contains gold color 16 inches happy Brthday alphabet balloons 16 inches number balloon and straw to blow the foil balloon use the plastic straw inflate the gass slowly until 90% filled and keep away from fire when the inflation is completed the balloon comes automatically sealing glue! hang happy Brthday letters on wall window ceiling or in courtyard it is very easy to decorate your Brthday party. After party please use plastic straw to export the air for reuse.