This ball is made of a rubber core of a basketball and common felt of tennis ball, it's much thicker than a normally pet tennis ball. But if you doggie is very naught or fierce, please choose it discreetly. Some kids 
are really a toy killer :) please notice that. 
BTW, please fill the ball as harder as possible. 
Genuine 24 cm Diameter Tennis Ball, Super thick! 
Use for signature or pet toy (My dog loves this type tennis ball very very much). 
Color: as picture

1 X Tennis Ball