30 Helium Quality Large (30cm) Metallic Gold, Metallic Black and Pearl White Professional Balloons. Perfect for an Engagement Party, Weddings, 18th, 21st, 30th, 40th etc or an Anniversary Party. These balloons are professional Quality and will with stand inflation with either Helium or Air. Please Note the listing does not include Helium or Balloon Strings, the listing is for the 30 Balloons only in which you will receive 11 of each colour. Please do not over inflate the balloons or they will burst or not last for long, please have a look on you tube for tutorials on how to inflate balloons correctly.