Features: 1. The tennis ball with rope must be used together with the base. Do not tie a tennis ball with string directly to the racket. 2. Simple tennis training: you don't need to wait for a partner, just practice by yourself. There is no need to hold the ball, the tennis ball automatically bounces when hit by a rope. Easily start practicing your serve, forehand and backhand. 3. The non-slip design of the base increases friction with the ground, effective stability. 4. The knotted design allows you to play comfortably without worrying about tangled strings. 5. A tennis is an ideal gift for tennis enthusiasts, families and children who love to play tennis. Specifications: Material: Polyethylene/Plastic Color: as shown Due to differences in manual measurements, please allow slight dimensional differences. Please note that there is some slight chromatic aberration due to the light and.