Yonex DUORA 77 badminton racket is an all-round model equipped with the DUAL OPTIMUM SYSTEM to boost power on your forehand and distance on your backhand.Aerodynamic for speed. Strong FOREHAND smash. Fast BACKHAND drive. With DUORA’s cutting-edge technology, command the court with every single shot. Easy identification of racket shape during play using unique color design.Yonex DUORA 77 has similar racket frame design as the Yonex Duora 10 LCW and Yonex Duora 77 LCW.