Maria Sharapova is endorsing the new line Graphene XT Instinct series of racquets The new Graphene XT Instinct MP will make her even more of a threat in 2015 The Instinct fits the modern game very well its not too heavy is stiff enough to be powerful but not harsh and the 100 square inch head size is perfect for new school topspin Head has improved the Instinct MP for 2015 with the inclusion of graphene XT HEAD reengineered the application of the worlds strongest and lightest material to make their Graphene XT racquets 30 stronger providing an optimized weight distribution for a faster swing and more power By using graphene XT in the racquet shaft HEAD has been able to move weight from the shaft to the tip and handle increasing power and stability without changing overall racquet mass more weight in the head provides greater plow through from the baseline and more mass in the handle reduces torque and recoil With the addition of graphene XT the Instinct packs extra power with less effort and is more maneuverable a combination modern games cant help but succeed with