WHY WE NEED SOLO TRAINING?It will be much easier to practice arm swing technique and tosses multiple times in a row with the volleyball training equipment aid. The elastic cord guides the ball back after every swing. No need for interrupting the training in order to fetch the ball like before. Multiple fast repetitions in a row get you in a state of flow, making it easy to perfect technique via quick feedback. ADJUSTABLE CORD LENGTHElastic double reinforced cord is adjustable in length. For optimal serve training, we recommend finding the optimal height for your height and adjust the cord accordingly. It can be adjusted up to 5' 9'' (1.8m). This aid set is portable for solo play, practice and training anywhere, perfect for both field players and goalies. SMART WAIST DESIGN ADJUSTMENT SYSTEMVelcro strap fits comfortably around your waist. It can be adjusted to accommodate different waist sizes up to 2'6'' (80cm). From youth to adult, the stretchable belt can fit anyone waist comfortable, this great trainer will fit all kinds of figure well. MULTIFUNCTIONAL & VERSATILENeoprene pouch with adjustable length holds standard volleyball or beach volleyball. It could even hold a soccer, football, water polo or basketball. For solo soccer or basketball trainer returns the ball to the player, for independent drills that build skills in shooting, passing, receiving, juggling, throw ins and more. What You Get: 1 x Training Equipment Aid Kit, 2 x Finger Stretchers