The 4G string provides maximum tension and legendary power, spin, and comfort. This rough version provides a little extra grip on the ball for added spin potential. To obtain Maximum Tension Maintenance, the molecular chains making up 4G are strategically aligned in a parallel fashion. This minimizes entanglement to ensure less creep. 4G is made from Luxilon's famous poly-ether-ether (ALU Power) and doped with nucleates. The nucleates help to maintain the suppleness of the string and increase its strength.