Model: Sriver EL Sriver EL combines Sriver's top sheet with a medium-soft elastic sponge. This softer sponge allows you to generate more spin without using a power swing. SPECIFICATIONS: Class: All-Round Surface: Inverted Speed:10.0 Spin: 8.0 Density: 35 The best mix of power with control Sriver is by far the most popular rubber covering used by table tennis players of all kinds from Champions to beginners. The most recent addition to the SRIVER range was SRIVER FX (flexible). Sriver with a soft sponge underneath. Now we are launching a new member of the SRIVER family, SRIVER EL (elastic) with a mid-soft elastic sponge that has been specially selected so far for only some of out leading world ranked players. Do you like a hard sponge? Or, do you prefer a soft one? 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 the new SRIVER EL. EL's mid-soft sponge gives the best mix of power with control.