Geisha Balls MagneticGeisha balls Magnetic are simple and clear to use. The package contains 4 balls of different weight. The set consists of two pink balls 27 g 0. 95 oz; and two black balls 15 g 0. 55 oz. The core idea of the exercise is to start with one black ball on a silicone string and then gradually increase the weight by magnetizing 1 ball at a time. It is the same you do during your workout at the gym. Geisha Balls Magnetic allows to do 7 levels of workout from