The Champion Sports Low-Spin Practice Discus, available in royal blue/silver, is designed to help athletes refine their technique. Constructed with a durable ABS plastic shell and a 70% steel rim weight, it produces a low-spin that's perfect for beginners and intermediate throwers. The 1.0 kg size is ideal for female and junior male athletes, while the 1.6 kg size is suited for male high school athletes.