IDEAL FOR SOLO TRAINING: Whether you're a beginner or an expert, our solo volleyball training aid is easy to practice arm swing technique and kick off multiple times in a row. Without the help of another person or chasing a ball with the rebounder's bungee cord, solo training is less cumbersome and fun ADJUSTABLE CORD LENGTH: The double reinforced elastic cord is adjustable in length. For optimal training, we recommend finding the optimal height and adjusting the length of the bungee cord by increasing the length to 86 inches or shortening to 43 inches for spikes, focus, strikes and strikes. solo practice of arm pivot rotations FOR ALL FOOTBALL VOLLEYBALL SIZES: Our ball pouch is made of lightweight material and neoprene. It is suitable for all sizes of sports balls. It can be a soccer ball, a soccer ball, or even a basketball. ages, from children to teenagers to adults ADJUSTABLE SIZE AROUND THE WAIST: The Hoop & Loop strap fits comfortably around the waist. It can be adjusted