Blow air into the outer balloon first, and then blow air into the inner balloon to make a double balloon. The following are the specific steps:

Tools needed: two balloons, blowing sticks.

1, put a transparent balloon outside.

2. Insert the blowing stick into the gap between the two balloons to blow.

In this way, the balloon outside will blow up.

4. Grasp the handle of the balloon by hand and pull out the blowing stick.

5. Insert the blow stick into the inner balloon and hold the outer balloon by hand to prevent air leakage. So the balloon inside will expand.

6. Stretch the balloon handle of the inner balloon.

7. Tie a knot on the handle of the outer balloon so that neither balloon will leak.

8. This is done, and the effect is good.