Fun Factory Smartballs Teneo Duo Kegel BallsThis duo combo has two weighted balls, each housing a smaller ball that moves freely inside it. As you go about your day, that inner movement creates a gentle, ongoing stimulation that naturally prompts the pelvic floor muscles to respond. There is no routine to follow and no counting involved. The body does most of the work on its own. The silicone exterior is velvety soft and the tapered shape makes insertion smooth. Once in place, the balls sit