Package Includes: 1 Pcs of ?Pink Printed 18 Inches First Birthday Twins Girl/Boy Polka Foil BalloonDecorate Your Child's First Birthday Party With This Balloon!. Use This Balloon to Accentuate the Rest of Your Themed Balloons & Decorations. Your Little One Will be Overjoyed When They See Birthday Party.Blow Them Up With Either Your Mouth, Air Balloon Pump, Or Helium. Balloons Does NOT FLOAT WITH HELIUM.You Can Reuse, Do Not Use One Time To Throw Away. Uses MicroSeal Technology For Strong and Longer Lasting Seal With a Seamless Appearance.Includes self sealing valve - self-sealing valve prevents the gas from escaping after it's inflated.