1. First, pull the uninflated wave ball to a certain size.

2. Align the air inlet of the wave ball with the air outlet of the inflatable tank, and then hold it by hand to prevent air leakage.

3. Open the valve of the inflatable tank, inflate the wave ball, and seal the wave ball after inflation.

Extended data:

Bobball, also known as space ball, is a new extreme sport. Bobo ball consists of a plastic balloon filled with air (generally about 3 meters in diameter), and there is a plastic ball with a diameter of 2 meters inside the balloon.

This ball can be played by two people at the same time. When people touch the ball, they fasten their safety belts with their hands and feet and rotate 360 degrees disorderly with the slope of the field, just like the feeling of astronauts decompressing and rotating in space, which is very exciting.