Batting is about muscle memory. This hitting aid will promote correct technique & incorporates proper batting mechanics into every swing. What is the proper baseball swing? How can I practice baseball swing mechanics? How can I eliminate batting tees, expensive baseballs, softballs, and awkward nets? Not sure how to teach an aspiring player how to swing a baseball bat? The Baseball Swing Line Trainer is the answer. This batting training aid will teach proper batting technique. It replaces batting tees and buckets of expensive baseballs. Perfect for team use. It truly is the all-in-one hitting trainer. Teaches batting mechanics while the athlete trains.