Xiom Jekyll & Hyde V47.5 Table Tennis Rubber A softer version in the Xiom Jekyll & Hyde series. Contact time is a key factor for both high trajectory and high control when hitting. The less time the ball stays on the rubbers surface, the less spin and control. The “V” rubber allows for a longer contact time while still delivering an energetic attack.Xiom Jekyll & Hyde Rubber V47.5 is the soft version of the Jekyll & Hyde series and incorporates a new rubber manufacturing method. With general rubber manufacturing technology, the stronger the repulsive energy, the less time the ball stays on the rubber surface, but with the new generation of rubber “V” has realized a new paradigm that allows sufficient ball drag ball while providing high energy.