This lightweight plastic cup easily attaches to any bat in seconds. The patented design forces the hitter to swing through the zone properly to launch the practice ball. If the player casts their hands, has bat drag, or any other imperfections in their swing, the ball will not fly correctly. But if the player takes a short, compact, proper swing, the ball flight path will be optimal and the player will have instant visual feedback of their good swing.

– Great baseball swing trainer for all ages and skill levels
– Small and lightweight design goes anywhere
– Includes 3 practice balls and velcro straps