High-quality foil number & Letter balloons, perfect for birthdays, anniversaries and New Years Eve parties, Choose from numbers 0-9 and... MATERIAL -- Made of high quality aluminum foil balloons,environmental protection materials. It is safe and non-toxic, self sealing helps the balloons maintains for nearly 1 week without leaking or losing air. PACKACKAGE INCLUDES -- Large Number Silver Foil Balloon measures 16" (41cm) when fully inflated (ships uninflated) EASY TO INFLATE -- Air Filled via hand pump or Straws and is self-sealing WIDELY APPLICATION -- Use for birthday, birthday party, wedding, baby shower,outdoor party, home party, celebrations and other on-site decoration. PERFECT PARTY DECORATION -- Hang these giant foil happy birthday balloons banner in the kitchen, living room, or party room and show the birthday boy or girl how much you care!