Kids will have a blast playing catch or working on their pitching with these versatile Champion Sports Plastic Baseballs. Great for everything from gym class to recreational activities, these hollow plastic baseballs are a safe option for young children to play with, economical, and light enough for a student to carry the whole bag out from storage with ease. Available in bright white, the plastic balls are also easy to spot against the grass, ground, and pavement when it's time to clean up. Baseballs—Set of 12. Diameter: 9"; Material(s): Plastic; Color(s): White; Quantity: 12/Set.