Donic Bluestorm Z2 has a long, thin pimple structure in back and a large pored sponge. This 47.5 degree medium hard sponge is ideal for many players.
One feels the storm and its power with the first contact and can direct this energy where one wants. Great speed, enormous rebound, with excellent spin and speed characteristics. Can't get any better than that.
Speed: 95 Spin: 97 Control: 70