The medical silicone ensures an easy and safe insertion of the Satisfyer Balls. The return loop, which is also made entirely of silicone, is used to easily remove the balls. The colorful material is supple and feels pleasant on the skin. In addition, the balls are characterized by a non-porous surface, which makes them very hygienic. All sets consist of three balls with a diameter of 3.4 cm but with different weights. This set includes balls with a weight of 80g to 150g. You start with the lightest weight and gradually increase. By wearing the Satisfyer balls for about 15 minutes a day, the pelvic floor muscles are trained and strengthened.