☆ Mizuno Red Mark Sponge Tennis Balls, 12 balls. ☆ Part number: 60H-805. Size: Diameter 7cm, Weight: 15g. ☆ Used for about 1 hour indoors by a sponge tennis circle. Poor condition balls have been removed, and simple cleaning has been done. I think they can still be used for sponge tennis practice. ☆ Good for children's tennis practice and also for baseball toss batting. ☆ This is an item from a club, so price reduction is not possible. ☆ Shipping will be by regular mail. No smokers or pets.