Mikasa Training Medicine Volleyball, Size 4, 270g (for general, university, high school, and junior high school students), Blue/Yellow, VT400W270, Rec

A training ball with the size of a size 4 ball and the weight of a size 5 ball. Effective not only for basic serve and receive training, but also for core strength and muscle building. Considered ideal for acquiring correct techniques that will benefit you in the future. Developed in response to feedback from players that it was difficult to distinguish between traditional training balls and match/practice balls, this design features a predominantly blue color scheme. *Please be careful not to overinflate. *For optimal pressure, please refer to the pressure indication or size indication on the air valve of the ball. Training Ball (Size: Size 4, Weight: Size 5) Training Ball Size 4 (For General, University, High School, and Junior High School Students) Size: Approx. 20cm in diameter, Weight: 240-260g, Recommended internal pressure: 0.30kgf/cm², Material: Synthetic leather, Made in China A must-have for those who want to strengthen their serve and receive skills! Ideal for basic core training and muscle building! For acquiring correct techniques that will benefit you in the future.