Difference between practice and game ball
Have you ever encountered troubles?
The "feeling, bouncing, and striking feel" of the game ball.
A thorough improvement practice ball.
Support your game in the game! Soft Practice Balls J 10 Dozen
This is an improved practice ball that thoroughly pursues the "feeling, bouncing, and striking feel" of the game ball.
Material: Natural Rubber, No. J Balls, For Elementary School Students, Diameter Approximately 2.7 inches (69 mm); The Promark Ball is double lined with rubber with different characteristics to ensure the basic performance of the ball.
The inner black rubber is made of carbon rubber that can withstand approximately 2 tons of force when hitting, giving it strength and ideal hitting experience.
The white outer rubber is made of abrasion-resistant rubber for an unlimited feel to the game ball.