Yonex nanoray tour 7700 is designed and developed at yonex japan. With x- fullerene material technology , tour 7700 is fast swing racket for those who wants to dominate in the game quick racket reactions. With aero frame section at top side gives better swing speed while box type frame at bottom side offers greater stability to racket head and results into effective shot placement. Weight of racket is around 85 gms with g5 grip. Its flex is medium which gives controlled shuttle lift. It is a unstrung racket and player can re strung the racket with nbg 99 string. Overall , tour 77 is solid feel racket for attacking game play type. Players with fast and attacking game type will like this racket most. Technology in yonex nanoray tour 77 yonex nanomesh and carbon nanotube material for headlight configuration yonex used nanomesh and nanotube material into shaft and frame of the racket. This new type of material create a mesh type material structure which gives following key benefits to players: A - very light but rigid badminton racket structure. B - lightweight racket helps in placing better drive shots. C - better racket strength and handling. D - improved repulsion power and strength.