Introducing Hundred’s 600S string. Engineered with heat-resistant and high-intensity materials, including 3D KNIT Technology, this 0.66mm thin-diameter string offers a balance of exceptional durability, repulsion power, and precise control. A special coating of Compound Elastic Resin enhances grip and control, while the core and outer layers provide strength and flexibility. With a generous 10m/33ft length, you’ll dominate every court without worrying about string replacements