Discover the technological marvel of the ISOMETRICTM design, a breakthrough developed over 30 years ago by Yonex CO., LTD. This innovative square-shaped racquet redefines performance, increasing the sweet spot by an impressive 7%* compared to conventional round frames. The ISOMETRICTM design optimizes the intersection of the main and cross strings, generating a larger sweet spot for enhanced precision and power. Experience the quality and performance that sets our products apart.