Satisfyer Yoni Power 2 Silicone Keger Exerciser Balls Light GreenThe Satisfyer Yoni Power 2 Set consists of three balls in different sizes which you can use to gradually train your pelvic floor. As a beginner, you start with the largest and heaviest, wear while standing, (3 cm diameter, 73 g) and work your way through the medium (2. 5 cm diameter, 46 g) to the smallest and lightest (2 cm diameter, 22 g). If you do these pelvic floor exercises regularly, you will quickly notice an effect as will your lover. Thanks