The head graphene touch instinct mp tennis racket is endorsed by a czech professional tennis player tomas berdych and has a mid plus 100in2 645cm2 head for a good level of control the use of graphene touch technology results in faster vibration reduction and an exceptional feel whilst an open 16x19 string pattern increases spin potential the racket offers effortless high performance and a bigger sweet spot for added power and comes pre strung with lynx 17 anthracite string for a lively tou