Airless Tennis Ball 2.0, a complete redesign based on feedback received from more than 10,000 downloads of the previous model.

Recommended materials for bounciness aproach are TPU 98A and PLA Flex (as seen in gif from 3DJVModels, check his profile!). They are materials similar in their hardness, which provide a bounce distance of +-50% from the drop height, while the official bounce is 53-58%.

TPU 95A resists impacts without breaking but has a bounce reduced to approximately 20% from drop height.