Fun Factory - SmartBalls Duo Kegel Balls (White/Grape)
For those who are looking for advanced training for their pelvic floors. Whether you graduated from SMARTBALLS UNO or have a naturally strong pelvic floor, this ball training system is for experts only! In short bursts, your balls will be trained to react to movement leading to a stronger pelvic floor. This means better control of your orgasms, and more intense ones at that. With a hollow design for easy insertion, you won't even know it's inside of you and working.