For beginners and recreational players looking for a reliable racket with effortless power.  ISOMETRIC™ – ISOMETRIC™ technology continues to help the world’s best players achieve global success. Developed over 30 years ago, ISOMETRIC™ increases the clear hitting area by 7%*. Compared to a conventional round frame, the square ISOMETRIC™ racket creates a larger sweet spot by optimizing the intersection of the main and cross strings. ISOMETRIC™ provides greater control without sacrificing power. ISOMETRIC™ is a trademark of Yonex CO., LTD. *Tested by Yonex.O.P.S. (Oval Pressed Shaft) - First introduced in 1969 with the T-7000 - Yonex's first aluminum tennis racket - the Oval Pressed Shaft (OPS) continues to be part of the most popular series of rackets. The oval pressed shaft is designed to provide players with greater spin, control and feel. The shaft flexes under impact, extending dwell time and minimizing vibration.SHOCKLESS GROMMET SYSTEM - The racket's grommets are integrated into the side and bottom of the frame to minimize muscle fatigue and provide a soft feel on impact, protecting the wrist, forearm and elbow by absorbing shock.AERO SHAPE - The frame's smooth contours reduce air resistance while increasing the speed of the stroke.DUAL SHUT SYSTEM - The Dual Shut System improves comfort and control on every stroke. Shock absorbing grommets in the lower part of the frame combined with Quake Shut Gel located in the handle eliminate 50% more of the resulting vibrations.