Endorsed by Novak Djokovic, the Head Graphene 360+ Speed S Tennis Racquet is slightly lighter than the PRO and provides the silo’s characteristics in an easier-to-handle version for a wide range of players. It comes with the Graphene 360+ technology, a combination of Graphene 360’s energy transfer and innovative spiral fibers for an enhanced flex and clean impact feel as well as a 16/19 string pattern for enhanced spin during fast rallies. It not only feels more solid against big hitting opponents, it does a better job driving the ball through the court. It also gives enough spin-potential to bring the ball down hard. The Speed S is available in a new design with an asymmetric combination of matte and glossy white and glossy black. Key Features: AUXETIC : Auxetic constructions show a unique deformation compared to non-Auxetic constructions. Due to their internal properties, Auxetic constructions widen when a “pull” force is applied and contract when squeezed. The bigger the applied force, the bigger the Auxetic reaction. POWER GROMMETS : The enlarged power grommets maximize string movement for increased power. SPEED PATTERN : A special speed string pattern provides with the perfect mix of power under control. GRAPHENE INSIDE : Strategically positioned in most of our racquets, Graphene strengthens the frame, provides greater stability and optimises energy transfer from racquet to ball. When you buy your next racquet, be sure it has GRAPHENE INSIDE. DIRECTIONAL DRILLING : Directional drilling combine increased power and sweetspot, delivering a plush impact feel. SPEED BEAM : The aerodynamic cross-section of the Speed beam maximizes swingspeed and power.