2pcs White Cloud Balloon foil Balloons. Cloud shape balloon is made of aluminum material, durable and reusable, you can fill them with air or helium. Our aluminum foil balloons are auto-seal, Easy to use. With the balloons, your party will be more joyful. Help you to create a strong festival and party atmosphere. You can use these beautiful balloons as ornaments to decorate some places in which they are able to create a happy atmosphere.