The head graphene xt prestige pro racket is endorsed by a croatian professional tennis player marin cilic and features a performance driven design with a special prestige typeface the most aggressive member of the prestige family is designed with technical players in mind and offers a dynamic 16x19 string pattern for more spin it has a head size of 98in2 630cm2 and uses innovative graphene xt technology that guarantees optimal weight distribution resulting in a faster swing and more pow