The Wilson Champion Series 12" Poly Core Softball Practice Balls in Yellow/Green are designed for match play. Made with a leather material and machine-stitched, these practice balls feature a raised seam for improved performance on the field. The polyurethane core ensures a consistent feel and bounce, making them perfect for training and practice sessions. With the Wilson brand reputation for quality and durability, these balls are a reliable choice for softball players looking to enhance their game.