As you train, gradually increase the weight of the ball as you increase the strength in your pitching arm
Color-coded cover indicates the ball weight
Set of 4 weighted leather softballs
Set contains one 9 oz., 10 oz., 11 oz. and 12 oz. softball with drawstring bagWarning: Weighted balls should be used with caution and with proper supervision and instruction. The seller hereby expressly disclaims all warranties, either expressed or implied, including any implied warranty of merchantability or fitness for a particular purpose.