Great for tennis warm-ups.
Sports Kick Sacks guarantee to provide hours of fun. 
The set comes with the following styles: basketball, baseball, soccer ball, and tennis.
Balls are made of woven string and are filled with beads. 
 
Funny and practical tool: playing with balls can exercise children's muscles, develop their hand-eye coordination, also practice their reaction capacity
Fits for: these juggling balls are suitable for most people, won't easily come loose, are convenient to pick up, and won't roll fast or bounce away.
also, a nice gift to share with children, students, family, and friends and also as a reward for fun party favors or carnival prize
Not for children under 3