The new large pore sponge provides better rebound, and the improved internal energy technology has more fast rubber energy. The improved internal energy technology brings faster ball speed and strong spin. The built-in fast rubber effect makes this rubber have the fastest speed and spin. It is like a rubber filled with fast rubber many times. High-performance rubber gives players more possibilities. In addition to high speed and high spin, it also has a good feel and the same sound as fast rubber.