The lighter version of the Astrox 100 ZZ, the Yonex Astrox 100 Tour Kurenai, is aimed at players seeking maximum hitting power, as it combines a very stiff shaft with a head-heavy balance. The sophisticated frame from Yonex, available in black, red, and white, incorporates a variety of technologies and materials that meet expectations. The Japanese company has chosen high-modulus graphite and the Namd process for the shaft. This advanced technology stores energy and releases it during the next hit, providing additional power. The Rexis fiber and Extra Slim Shaft are also included in the shaft, ensuring peak performance. The Energy Boost Cap/Plus at the base of the shaft provides flexibility and propulsion of the shaft to achieve full performance. The Rotational Generator System (RGS) is the flagship feature of the Astrox rackets and will impress you with its clever weight distribution. The RGS adjusts the weight at three key points (top of the frame, T-joint, and butt cap), resulting in more power in the offensive by shifting the weight to the racket head. The Solid Feel Core in the racket head reduces vibrations caused by the impact of the racket on the shuttlecock, enhancing the player experience. The Aerobox frame ensures stability and airflow, leading to better whip shots and improved shot combinations.