Easy to Assemble:Balloons ship flat and deflate. Take them to your local party store to have them been filled with air, helium and water.About 2 days when party balloons filled with air;3-6 hours when filled helium in latex balloons. Unique design balloons for party. Pacakage Including:Macaron blue balloons 18inch*2pcs 12inch*10pcs 10inch*60pcs 5inch*10pcs Macaron white ballons 12inch*10pcs 10inch*30pcs Silver 4D Ballons 18inch*4pcs 10inch*3pcs Metallic Silver Ballons 12inch*10pcs Decorations For Wedding Birthday Party:Our Ballons set is ideal for creating a celebratory atmosphere for your upcoming Boy Birthday Party,Mermaid Ocean Party,Baby Shower,Bridal Shower,Christening&Baptism Party,Gender Reveal Party,Rustic Wedding Party Warning: There will be a certain color difference before and after the balloon is inflated, and the color of the balloon seen by different monitors is also a little different. Please don't overfill the balloon and avoid sunburn or overheat. Balloons are suitable for children over 8 years old.