The JUGS Sting-Free Dimpled Baseballs give you the maximum accuracy and performance available when used with your JUGS Pitching Machine. The Sting-Free balls are the same size and weight of regulation leather balls. When hit, these baseballs feel like leather, will not damage your aluminum bat, and they will not sting your hand, so you can practice for hours! Their waterproof construction makes them great for indoor or outdoor use. Choose from optic yellow or white Sting Free Dimpled Baseballs.