The RQS 9 utilizes a Power Isometric head shape combined with other premium performance technologies that give you more power, control, maneuverability and stability than ever before.
Power Isometric: Introducing the next stage in the evolution of the Yonex Isometric theory. Power Isometric is a wider Isometric area that increases the already large Yonex Square Head sweetspot by 20% compared with a conventional round head racquet. The construction yields more power and more repulsion. It reduces the inert space found in the conventional round frame but it keeps the sweetspot the same size. This makes the racquet easier to swing through and gives it topnotch maneuverability, as well. The 20% larger effective Isometric area in the heart of the frame allows serves to be delivered with more speed and control from higher in the stringbed.
