·IDEAL PRACTICE BALLS: These pitching machines ball , Made From High Grade Polyurethane for player safety during use and increased durability overtime,improve hand-eye coordination. ·HIGH VISIBILITY BASEBALL: Our balls with bright optic yellow ,red ,green etc, come in vibrant color, which will make it easier to catch and hitting, great for hand-eye practicing. ·STANDARD WEIGHT & SIZE: The balls is standard baseball&softball size.