Improved ball holding performance. Punch the opponent with the decisive hit you aimed at. SPECMaterial High elasticity carbon + VOLUME CUT RESIN + tungstenShaft: Highly elastic carbon + NamdJoint: New built-in T-shaped joint Size 4U (average 83g) 5/6, 3U (average 88g) 4/5/6 Color emerald blue Recommended tension 4U: 20-28 (l bs)3U: 21-29 (l bs) Recommended string [Hard hitter] BGABBT, [Control player] BGAB (Nippon Badminton Association certified product) 5mm LONGER Namd Revolutionary Graphite A world-first, new dimension graphite material, Namd, greatly improves the adhesion of the graphite fibers and resin by attaching nanomaterial directly to the graphite fiber.In high performance racquets, it is common to combine nanomaterials with resin that connects graphite fibers, but in Namd, nanomaterials are directly adhered to the graphite fibers and resin is greatly increased. This major improvement produces a shaft that flexes and stores energy, delivering explosive force on impact with the shuttle. AERO+BOX Frame Combines solid hitting feel and quick swing. ISOMETRIC Enlarged Sweet Spot ISOMETRICTM technology continues to help the world’s greatest players achieve global success. Developed over 30 years ago, the ISOMETRICTM design increases the sweet spot by 7%*. Compared to a conventional round frame, a square-shaped ISOMETRICTM racquet generates a larger sweet spot by optimizing the intersection of the main and cross strings. ISOMETRICTM delivers greater control without sacrificing power. ISOMETRICTM is a Trademark of Yonex CO., LTD.*Tested by Yonex Rotational Generator System Counterbalanced Weight Distribution By applying the counterbalance theory, weight is distributed throughout the grip end, frame top and the joint for maximum control. The transition to the next shot can be performed smoothly, with rapid succession. Solid Feel Core Cuts Vibration The built-in solid feel core cuts harmful miscellaneous vibration at impact. Solid feel core is carried in all racquets manufactured in Japan. Extra Slim Shaft Thinnest, Strongest Ever Produced by Yonex Cutting edge NANOMETRIC carbon technology is used to produce an ultra-thin, ultra-tough, aerodynamic shaft, created for a stronger and more intense shot. Energy Boost CAP PLUS Uniquely shaped cap which maximizes shaft performance.The front allows the shaft to flex, while the sides arch-shaped curve stabilizes the racquet face by preventing the shaft from twisting. VOLUME CUT RESIN