Jaeger J-Bands are baseball training equipment for youth, teens and adults. These baseball & softball pitching trainers offer premium baseball training for fastpitch pitching. If you are a pitcher, these baseball bands for pitching build strength, endurance, and velocity. They are portable, store easily in your bag, and come with a laminated instruction sheet. They are as essential as having a bat and glove. Proper use will give baseball and softball pitchers and players an edge as they grow and develop their pitching skills.