The new Yonex Ezone Xi series is packed with innovative technologies to power your game to the next level.YONEX improved O.P.S (Oval Pressed Shaft) manufacturing technology introduces rounder shaft corners providing an ideal level of flex, whilst a wider shaft face. This not only increases stability which results in extended ball dwell time, and it is this that generates better ball spin and directional control.This is the first racket to feature Extra Isometric, which provides an enhanced sweetspot, reduced frame vibration and additional power. This sweetspot is where you get the greatest repulsion power.Newly developed by Yonex, there is a Shock Dampening GRID sheet. This has been inserted into the shaft of the racket to absorb vibrations created between the two tubes within the grip, which results in even more power to your game.Yonex developed the Quad Power System and it has now evolved. This technology increases the thickness at all four corners of the racket, improving frame stiffness and generating more power for your play. By continuing to use NEOFADE along both sides of the frame, plus the newly developed Nylon Composite Grommet, shock and vibration is reduced at the point of impact.Specification:*Balance: 320mm*Head Size: 100sq in.*Length: 27in.*Weight: 300g