Best Seller | Champion Sports 4 LB Rhino Gel Filled Medicine Ball For cardio training or use with a rebounder try the Champion Sports 4 lb Rhino® Gel Filled Medicine Ball. With a soft pliable textured exterior this medicine ball is easy and comfortable to catch and throw making it a great choice for training with a... more | | $39.33 $21.14 FREE shipping go to store |