Sriver EL combines SRIVER's top sheet with a medium-soft elastic sponge that until recently had been specially selected only for our leading world ranked players. Do you prefer a hard or soft sponge? If you like a hard sponge, then you can choose the "normal" SRIVER. If you prefer a soft one, then SRIVER-FX is ideal for your play. But, if your requirement is in between the two (and this is where most of the top players are placed) then we recommend SRIVER-EL. Speed: 10 Spin: 8 Density: 35 Reglue Effect: High