Bin even table tennis coach and use in my training now exclusively the "Donic Schildkröt 3-star Super" ball !! I am more than satisfied - I am delighted with the quality and the feel! Almost everyone who comes with this ball for the first time in touch, feel and notice the big difference to the balls of the same class of other manufacturers. Difficult to describe - best to try yourself !! From my side, a strong buy recommendation !!