Volleyball Service Fits Size 4 and 5 Secure 240cm Training Aid for Serving Practice and Shoulder Club Circle Trainer, Balls, Strap, Strengthening,

Suitable for: Elementary school students, junior high school students, high school students, university students, adults, and women (moms' volleyball). Suitable ball sizes: 4 and 5. Waist size: Approximately 50-95cm. The Service Trainer is a volleyball product that allows you to practice your serve by yourself, anytime, anywhere. The elastic strap returns the ball after you hit it, so there's no need to chase after it. You can check and practice your swing, hitting point, and home run just like you're serving. It can also be used for club activities, pre-match warm-ups, and more. It consists of three parts: a ball holder, strap, and waist belt. The ball holder and waist belt are made of neoprene, with a thickness that takes into consideration the feel of the ball, durability, and lightweight design. When comparing practice time with hitting balls against a wall, it is possible to practice more than 1.5 times more. We recommend using Mikasa No. 4 or No. 5 balls. The strap is 240cm long, 100cm longer than that of a certain manufacturer, ensuring sufficient stretch after hitting. If the strap is too short, the ball and the strap will return at the same time, making it difficult to catch the ball, and if the ball is hit hard, the strap may hit your face, which is dangerous. Service Trainer has improved the strap so that the ball returns at a moderate speed after hitting, making training easier. The ball holder is made tight to securely hold the ball in place. The joint between the strap and the ball, which is the area that bears the most stress, is stitched multiple times to increase durability. The ball holder has been improved so that it can now accommodate size 5 balls. *Balls are not included with this product. This service trainer allows you to practice your serve by yourself, anytime, anywhere. The elastic strap returns the ball after you hit it, so there's no need to chase after the ball. It can also be used for self-training, such as checking your serve swing, impact point, and home run, as well as for club activities and warming up before a game.