The spin performance has been improved with a top sheet that combines a slightly thicker grain shape than Q3.

In combination with a high-resilience sponge, it enables a powerful spin ball that threatens the opponent.

Q4 is a rubber for players who attack with a fast swing and a strong spin.

◆ Type: Tension Rubber

◆ Sponge thickness: Special thickness 2.1, Thickness  1.9, Medium  1.7