Designed for Recreational Use, this bag of 6 official league baseballs features a solid cork and rubber center, making them ideal for batting practice or casual games. High-performing baseball made to the exact specifications of League Baseball. Hone your pitching, batting, catching, and throwing skills comfortably and effectively. The inner winding maximize shape retention, shock absorption, and provide for great flight control. This baseball is intended for both practice and play at the high school, college, and institutional level.