The diameter of the ball is between 18 and 20 cm.
Weight: Min. 400gr (300gr for junior).
Material: Rubber or plastic
How to hold.
The gymnast has to hold the ball softly,the fingers should be slightly separated,
but not gripping the ball.It may not be rest against the wrist.
Required routine elements include throwing, bouncing, and rolling.
Rolls.
Can be performed on the floor or on the body. As a continuous motion, rolls should be smooth, without bouncing.
Video:
Rhythmic gymnastics-ball
Nice ball routine
