At first the ball affects use something "oily", but you can knead it and press.
However, the ball comes into contact with water (because you want to clean it, because it is contaminated with frequent use), then it sticks very strongly after it has dried. Supposedly baby powder remedy, only those who apply baby powder bsp.weise at the office?
A "normal" rubber ball is as yet practical. So if you want uncomplicated knead a ball, for example. in the office, which is not well served by this.
