The NANOFLARE NEXTAGE racket is designed for intermediate players who prefer a defensive and combination style of play.Specification:Stiffness: AverageFrame: HT Graphite, Nanocell NEOShaft: GraphiteJoint: Built-in T-JointLength: 10 mm longerWeight: 4U (approx. 83 g)Recommended tension force: 9-12.5 kg / 20 - 28 lbsRecommended string: Control - SKYARC, Power - NANOGY 95Color(s): White / GrayManufacturer's symbol: NF-NXTechnologies:NANOCELL NEO- A resilient and at the same time surprisingly flexible graphite material.AERO FRAME- AERO Frame reduces air resistance and allows for a faster swing.ISOMETRIC – ISOMETRICTM technology continues to help the world's best players achieve global success. Developed over 30 years ago, the ISOMETRICTM design increases the pure rebound area by 7%*. Compared to a conventional round frame, the square ISOMETRICTM racket generates a larger sweet spot by optimizing the intersection of the main and cross strings. ISOMETRICTM gives you more control without losing power. ISOMETRICTM is a trademark of Yonex CO., LTD. *Tested by Yonex.SONIC FLARE SYSTEM- Maximum acceleration. Revolutionary new TORAYCAR M40X graphite material and SUPER HMG provide unrivaled power and stability for maximum acceleration.SUPER SLIM SHAFT- A thinner frame provides a faster swing and better feel.BUILT-IN T-JOINT- Embedded in the graphite layers, where the head connects to the shaft, provides a strong connection that is resistant to torsion.