Designed for use with a variety of Heater(R) Pitching Machines, including the Combo, Jr., Pro and 4-in-1, the Yellow Dimpled Pitching Machine Softballs are the same size and weight as a regular 11" softball for accurate game day simulation. The Heater(R) 11" Pitching Machine Softballs are made from durable, molded polyurethane for extended ball life and maximum performance. The bright yellow color locks in a player's vision and focus. FEATURES: Yellow 11" dimpled pitching machine softballs Same size and weight of a regulation 11" softball for accurate game day simulation Durable polyurethane molded construction for extended ball life Dimpled texture delivers a pitch with pinpoint accuracy Bright yellow color engages a player's vision and focus Designed for use with the Heater(R) Combo, Jr., Pro and 4-in-1 pitching machines Includes 12 balls (1 dozen) per purchase Recommended for ages 8+ 30-day manufacturer's money-back guarantee Manufacturer's warranty: 1 year Model: PMB34 Heater Sports For additional information relating to the Manufacturer's Warranty, please contact 435-656-1756.