How do you poof up a jelly ball?

To poof up a jelly ball, you typically need to soak it in water, allowing it to absorb moisture and expand. The jelly ball, often made from a polymer material, swells as it takes in water, resulting in a larger, bouncier ball. Make sure to follow the specific instructions provided for the jelly ball, as different types may have varying soaking times. Once fully expanded, it can be used for play or decoration.