The 729S40+ seamless ball is made of imported materials, nanotechnology, and has been strictly screened 8 to 10 times. It has stable bounce and a more solid feel. In addition, the 729S40+ seamless ball can more accurately control the ball landing point and improve the accuracy of the shot. Compared with the 729WTT version of the seamless ball, the 729S40+ seamless ball has taken a step forward in terms of batting feel, landing point, trajectory, etc.