A speed-oriented ALL-AROUND racket that combines high elasticity with sharp downward whipping angle. It delivers a crisp, powerful hitting feel with agile handling, making it ideal for players excel at controlling the pace. Weight / Grip Size 3U/G5 4U/G5 Frame Material High Resilience Modulus Graphite+PYROFIL 46T+Nano Fortify TR+NANO AEROGEL+HARD CORED TECHNOLOGY Shaft Material High Resilience Modulus Graphite+Metallic Carbon Fiber+PYROFIL+6.6 SHAFT String tension LBS ≦ 33 lbs(15kg) ≦ 32 lbs(14.5kg)