Heater Sports Pitching Machine Baseballs When used with the Slider Pitching Machine (sold separately), the baseballs pitch at about half the speed of regular Slider Lite balls so Little Leaguers moving from tee ball league to pitch league can learn how to hit the ball without being afraid. Slider "Soft" Lite pitching machine baseballs are the ideal add-on for your Trend Sports Slider Lite Pitching Machine. The optic orange dimpled design makes balls easier to focus in on and provides improved accuracy when compared to seamed balls. Super soft for indoor and outdoor use. Weights 2/3 less than regulation baseballs. 12 balls per package. Ages 3 and up. 30-day money back guarantee - one year warranty. Use for baseball or golf.