Use Jugs(R) Lite-Flite(R) 12" Softballs for a safe, pain-free practice in the Jugs(R) Lite-Flite(R) Pitching Machine. The B5005 optic yellow softballs are the same size as regulation softballs and maintain their original shape when coming out of the pitching machine, regardless of speed. These pitching machine balls provide a truer pitch and feel for practice hits, but don't sting if they hit your arms or body. FEATURES: Size : 12" Sport : Fastpitch or Slow Pitch Cover : Bright yellow synthetic material Core : Lightweight, sponge-like design for safety and true flight League/Certification(s) : Practice only Stitching/Seams : Embossed for realistic feel Additions : For indoor or outdoor use; offensive and defensive drills Other : Maintains original shape after coming out of the pitching machine, regardless of speed Balls included in purchase : 12 (dozen) Recommended Use : Lite-Flite(R) M600 Pitching Machine (11315323) Model : B5005 Jugs