The FX-S is the "little brother" of the EL-S. Here too, the high-performance surface combines the enormous spin values of the MX-S with the power of the MX-P. The sponge is softer than that of the EL-S, so that the FX-S, in combination with an individually tailored pimple geometry, plays even more elastically and lives up to its type designation "Flexible Spin". Much softer than the MX-P and MX-S, but slightly harder than the FX-P, the FX-S nevertheless clearly distinguishes itself from the medium rubbers EL-P and EL-S. This makes it a unique rubber in the EVOLUTION series.