Polyester players seeking a winning combination of spin, power control and comfort should look no further than the new Genesis True Grit Tennis String Blue. This string takes the latest in cutting edge technology and composite additives and gives players tremendous power and spin in a comfortable package. The string’s 10-sided shape results in exceptional spin potential and excellent ball control. The string is also axially twisted, giving it a sharp edge and even more bite on the ball. Genesis utilizes advances in co-poly additives to add even more comfort and tension stability to the string. The Genesis True Grit is a great choice for heavy hitters looking for loads of spin and power without sacrificing playability and durability. Construction: Co-polyester monofilament Color: Metallic Blue Length: 40’ set