HEAD updates one of their most iconic racquet families with the Graphene 360+ Radical S Tennis Racquet. The S represents the most user friendly model in the Radical series. With a larger 102 square inch head and an unstrung weight of 9.9 ounces, the S emphasizes maneuverability and forgiveness. Graphene 360+ technology improves stability in the head and shaft, while Spiralfibers at the 5 and 7 o’clock positions in the head provide plenty of flex for a soft feel at contact