Donic's new Bluefire is a completely new rubber development offering top speed. A new high-tech generation of rubbers in the proven Formula FD3-technology has been developed as a result of the perfect combination of the large pored blue sponge with an extremely spinny top surface rubber. The top rubber with its small, long pimpled-in structure lends the rubber the best possible flexibility and sensational feeling. Above all, the Bluefire is unbelievably fast with a characteristic high arc when top-spinning that enables maximum spin and increased speed.