Yasaka Rakza 7 Ping Pong Rubber in red color. The RAKZA 7 is Yasaka's newly developed rubber, which mainly uses natural rubber for its surface. This significantly improves grip level and spin power. The surface is combined with the new "Power Sponge." The collaboration of the surface and the "Power Sponge" produces the Hybrid Energy RAKZA 7 rubber. When the player hits the ball hard, the rubber "grabs" the ball, and the motion can be used to place the ball accurately, both in direction and length. Serves and short returns are very sharp and easy to control. Due to the increased percentage of natural rubber content, durability is enhanced.