Square-shaped ISOMETRIC racquet generates a larger sweet spot by optimizing the intersection of the main and cross strings; Aero Trench and Aero Fin Technology reduce air resistance for easy maneuverability and added spin; Silicone oil infused within the grommets allow the racquet to quickly flex and snapback into its original position; A wider frame at 2 o'clock and 10 o'clock position increases the ball contact area, which produces a higher launch angle; Throat design with "torsional resistance" helps stabilize the racket, reducing power loss; Made in Japan