The sponge in the Evolution FX-D rubber provides enhanced dynamics with a softer feel, demonstrating impressive power, particularly in topspin shots. The Evolution FX-D offers a distinct playing experience compared to the excellent FX-P and FX-S versions and positions itself between the high-performance EL-P and EL-S rubbers and the top models MX-P and MX-S in terms of performance, spin, and speed.