Heater Pitching Machine Baseballs 12 Baseballs Heater pitching machine baseballs are specifically designed for Heater Real Baseball Pitching Machines. These balls are optic yellow in color, made from durable polyurethane, and pitch with pin point accuracy. Perfectly molded at the factory, Heater baseballs are the world’s most accurate pitching machine baseballs. Features • Recommended ball for most Heater brand pitching machines • Made from durable polyurethane for extended ball life Key Specs:  • Recommended Ages: 8 years to Adult • 30-Day Money Back Guarantee - One Year Warranty