ISOMETRIC - Enlarged Sweet Spot ISOMETRIC TM technology continues to help the world’s greatest players achieve global success. Developed over ³⁰ years ago, the ISOMETRIC TM design increases the sweet spot by ⁷%*. Compared to a conventional round frame, a square-shaped ISOMETRIC TM racket generates a larger sweet spot by optimizing the intersection of the main and cross strings. M⁴⁰X A next-generation highly strong, yet elastic carbon fibre developed by Toray Industries, Inc. (TORAYCA M⁴⁰X is developed by Toray Industries, Inc.). Solid Feel Core Reduces vibrations traveling down the shaft for improved comfort. Sonic Flare System Carefully selected high modulus graphite are strategically placed across the bottom of the frame to provide unrivalled power and stability for maximum shuttle acceleration. Super Slim Shaft Reduced Air Resistance, designed to slice through the air, generating speedy power. Energy Boost CAP PLUS Uniquely shaped cap which maximizes shaft performance. The front allows the shaft to flex, while the sides archshaped curve stabilizes the racquet face by preventing the shaft from twisting.