Heater 11 Inch Pitching Machine Softballs One Dozen 11" Softballs Heater pitching machine 11” softballs are specifically designed for Heater Combo 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 11” softballs are consistently accurate. Features • 11 inch softball design • Recommended ball for Heater Combo 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