Your game is loaded with spin and speed. You force the point by your powerful, persistent topspin game. Break with conventions, use the strengths of the ENERGY CELL technology: more power and quality in your strokes, high dynamics and longer ball contact feel. The ENERGY CELL sponge with its highly elastic cell structure ensures an extremely dynamic energy transfer for all topspin variations. Team up with the 48 ° sponge and its above-average optimal sweet spot. Rubber type: Inverted