EXCEPT NO SUBSTITUTES--Only a JUGS ball comes with the JUGS name on them. USE INDOORS OR OUTDOORS Their sponge-like texture makes them safe for indoor hitting without a batting cage MACHINE USE Designed specifically to be used with the JUGS Lite-Flite Machine but can also be used for toss drills or tee drills. OFFENSE OR DEFENSE Players see a realistic pitch but do not get stung by the ball. This makes the JUGS Lite-Flite baseballs ideal for offensive and defensive drills. BY 1 or 2 DOZEN OR BUCKET Same size as a regulation baseball, JUGS Lite-Flite Baseballs come in Optic Yellow, and are available by the dozen, two dozen or by the bucket of 18. PLAYERS SEE A REALISTIC PITCH WITHOUT FEAR OF BEINGS STUNG BY THE BALL OFF SPEED PRACTICE JUGS Lite-Flite Baseballs used in combination with the JUGS Lite-Flite Machine let players learn to hit the off-speed pitch without the fear of being hit. The perfect ball for players of all ages.