IDEAL FOR SOLO TRAINING: Whether you are a beginner or an expert, our Solo Volleyball Training Aid is easy to practice the arm swing technique and throws up 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 burdensome and fun ADJUSTABLE CORD LENGTH: The reinforced double elastic cord is adjustable in length FOR ALL SIZES OF VOLLEYBALL FOOTBALL: 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, even a basketballages, from children to adolescents to adults SIZE ADJUSTABLE AROUND WAIST: The Hoop & Loop strap fits comfortably around the waist. It can be adjusted