Play with superlight Badminton Racket Technology The Li-Ning N99 GOLD MEDAL is used by World Champion and Olympic Gold Runner up Chen Long. The Li-Ning N99 GOLD MEDAL is part of the "Air Stream System Series" which uses the wind tunnel structure which reduces wind drag by 8.2% and increase the shuttle speed by 3.1%. The iconic wind tunnel design minimize the formation of eddy during swinging motion. It prevents racket instability and also achieves more accurate dropping point. The N99 is an ideal racquet for drop shot technique play . With added weight to its racquet head using the latest Multi Polymer Carbon Fibre Reinforcing Technology, players can maximise the advantages of G Force, while optimise the gravity force to create exceptional power and speed. Through extensive research an development in Nano Science Technology, G Force provides players with the extra edge needed in their game. AIR STREAM SYSTEM Unique patented air vents located at the top and / or bottom of the badminton racket frame reduce air resistance by an astonishing 8.2% resulting in increased smash speeds by up to 3.1%! DYNAMIC-OPTIMUM FRAME Dynamic Optimum Frame is a high tech badminton racket frame technology that delivers exceptional offensive and defensive play characteristics and includes an enlarged sweet spot for high repulsion performance. AEROTEC-BEAM SYSTEM The Aerotec-Beam System is an extra aerodynamic badminton racket frame structure that is specially engineered to minimize air resistance while maintaining the strength of the frame. This reduces athletic fatigue resulting in a competitive advantage to the player. WING STABILIZER The Wing Stabilizer reduces vibration and torsional forces by using aerodynamic engineering techniques to deliver lightning fast badminton racket frame recovery making subsequent strokes significantly more accurate and consistent. UHB SHAFT Extensive research and design has resulted in the UHB Shaft for improved badminton racket flex higher up on the shaft to provide extreme strength and control. The UHB shaft improves smash performance and is especially effective when hitting half smashes. BIO-INNER-CONE This patented state-of-the-art badminton racket shaft technology improves flexibility and enhances the overall control and feel of the racket. Bio-Inner-Cone technology is a flagship technology that can be found on numerous high end Li-Ning badminton rackets. STABILIZED TORSION ANGLE This feature implements a highly elastic design that is built into the badminton racket frame to reduce torsional forces caused by hitting outside of the sweet spot. The Stabilized Torsion Angle greatly improves accuracy and consistency with each and every swing. TB NANO POWERTEC A perfect bonding of a special nanometer carbon fiber improves strength by an astounding 20% without compromising the overall weight of the badminton racket. Rackets with TB Nano Powertech technology are a hit among those that are looking for a high level racket with a modest budget.