Satisfyer Strengthening Kegel Exercise Balls SetThis Satisfyer Strengthening Kegel Ball Set offers a structured way to approach pelvic floor training, with three weighted balls that let you increase resistance as your strength grows. It works equally well for first timers finding their baseline and for those ready to push further. Each ball is 3. 8cm in diameter with a smooth medical grade silicone exterior, soft to the touch and easy to wear. There are three weights (57g, 73g, and 86g) give you