5 X balloons. Features： Perfect decoration for a sports themed birthday at the featuring a foil football background for birthdays children s parties graduation or gender revealing football birthday decorations. Bright and polyester film Our high quality balloons are made of durable and ultra bright aluminum foil which can maintain shape without leaking or losing. Applicable: Helium or filled self sealing. size：18/20/32 Inch Material: High quality aluminum foil