Donic Bluefire M3 the perfect adjustment of the soft version with precise feel, excellent spin and perfect sound. Recommended for: Players that prefer soft rubbers with perfect control and good speed. Also for aggressive all-round players. The blue miracle 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.