The Fusion Cables Velocity Trainer is an essential training tool for all throwing athletes. With your Fusion Cables Velocity Trainer Arm Bands you will build stability, power in your hips, and explosiveness all leading to increased velocity. With our unique design you are not going to be training from a centralized anchor. You will maximize your results with our Four-Point Mounting System. Each Fusion Cables Velocity Trainer includes four levels of Fusion Cables to maximize arm strength and rotational power. Customizing your Fusion Velocity Cable System is easy. Whether you are a user that is 13 years or younger, or a more advanced user, 14 and up, you are going to receive different levels of Fusion Cables to build strength in your shoulder.