All of balloons have a tab for hanging easily with string. We will attach a straw for every letter balloon. Can use these straws to inflate and deflate with mouth. When the inflation is completed, please put the balloon to pinch flat, it becomes automatically sealing glue. We package every balloon of letter in a gray plastic bag so that they are away from any harm. Because of air will be thermal expansion, if the balloon is in the sunshine for a long time, please don't inflate too fully to prevent popping.