The Li-Ning 3D Calibar X Boost Badminton Racket features a flexible shaft and moderate weight for a perfect balance. Take a closer look at the badminton racket. Technologies used in the racket: MPCF Reinforcing Technology: The Li-Ning 3D Calibar X has been bolstered by Li-Ning’s MPCF Reinforcing Technology. MPCF Reinforcing Technology puts multi-layer carbon fibers combined with exquisite handicraft to work in order to bolster the racquets and enhance their intensity and durability. HIGH-TECH GEOMETRIC DESIGN: The Li-Ning 3D Calibar X Racquet has been designed and crafted for high performance to achieve this. The racquet has been architectured with a special HIGH-TECH GEOMETRIC DESIGN. About Li-Ning: Li-Ning Company Limited is a Chinese sportswear and sports equipment company founded by former Olympic gymnast Li Ning. The company endorses a number of athletes and teams worldwide. Which colour does the badminton racket come in? The Li-Ning 3D Calibar X Boost Badminton Racket comes in dark grey and red colour variant.