Enhance Hitting Power: The tennis serve training tool is designed to provide additional resistance when hitting the ball, helping players generate more force and gradually improve their hitting power. Improve Accuracy: Using this tennis training tool encourages players to focus on contact point and swing angle, supporting better accuracy and control over shots. Versatile Use: In addition to standard hitting practice, this tool can be used for arm, wrist, and shoulder strength training, as well as flexibility exercises. Premium Material: Made from silicone material, the tennis training tool offers high flexibility and durability, providing a comfortable and reliable experience. Package Includes: 1 Tennis Training Tool Ideal as a gift for family and friends on birthdays, holidays, or special occasions. Specifications: Material: Silicone Size: Ball – 58 cm (22.83 inches) Note: Slight variations of 1–2 cm (0.39–0.79 inches) may occur due to manual measurement.