TIBHAR EVOLUTION MX-S. Just in! As tested by England superstar Paul Drinkhall, the new Evolution MX-S is designed for the new poly / plastic ball and is perfect for all dynamic spin attacking players. Thanks to the new pimple geometry of the rubber surface the ball contact time is expanded creating a spin geared dynamic version of Evolution with top catapult effect when playing aggressively. Great ball feeling, the rubber response is tremendous when playing powerful attacking spin strokes both at the table or at mid distance. The sponge density on this rubber is between 45.7 – 47.7 degrees.