Mach-10 Tennis String is Solinco’s newest shaped co-polyester string, engineered for explosive power, superior feel, and long-lasting playability. At its core is the CloudFORM technology—an innovative chemical formulation that gives Mach-10 its best-in-class power, comfort, and tension maintenance.Mach-10 breaks away from Solinco’s “big three†to introduce a new family of feel-driven, high-performance co-polyester strings. With a completely new composition, it captures the best qualities of its predecessors while elevating feel and control. Its pop and pocketing produce a signature sound, bringing a new dimension to its performance.Construction: Co-polyesterGauges: 16/1.30mm | 16L/ 1.25mm | 17mm/1.20 | 18 / 1.15mmColor: Light BlueLength: 40 ft / 12.2 m