This volleyball training belt allows you to easily practice serving and spiking, even by yourself. You can practice anywhere, indoors or outdoors. Since the ball is connected to the strap, you don't have to waste time retrieving it. This allows for efficient serving practice. It's recommended for warm-ups and individual practice. Attach the ball with the Velcro, then attach the strap to the waist belt and put it on. The strap length is adjustable, so you can adjust it to suit your training. Size: Waist approximately 50cm-95cm, Strap length approximately 240cm Compatible ball sizes: Size 4 and Size 5 volleyballs Training belt, solo, with strap