Yonex VCORE XI LITE Tennis Racquet This versatile racquet allows for power and control behind all types of plays. The VCORE Lite features an ISOMETRIC head shape that improves your accuracy even on off-centre hits. The 3D Vector shaft creates face stability, adding stiffness to this light racquet and reducing twisting upon impact. ISOMETRIC TECHNOLOGY The Isometric head shape is a unique and evolutionary breakthrough technology in racquet design. In conventional racquets, the sweet spot is located where main strings and cross strings meet. The Yonex Isometric head shape allows for an increased number of main and cross strings that meet in the center of the racquet to produce a sweet spot which gives a 7% more effective hitting area for you to make match winning shots. NEW OPS TECHNOLOGY Yonex O.P.S. (Oval Pressed Shaft) manufacturing technology introduces rounder shaft corners providing an ideal level of flex, whilst a wider shaft face increases stability resulting in extended ball dwell time for optimized ball spin and directional control.