The Swift Stik Training Bat sharpens hand-eye coordination, builds muscle memory, helps increase baseball bat speed, and teaches hitters to hit the "sweet spot" with its patented, adjustable foam head. The Swift Stik is perfect for little leaguers or more advanced players looking for an edge. It's made of durable aluminum that is guaranteed for life and includes an instructional DVD and 12 golf-ball sized practice baseballs. The Swift Stik will build a batter's confidence and help make you a better hitter! Available in 34" (13 oz.) Adult and 30" (12 oz.) Youth sizes.