SVAKOM Nova Kegal Vaginal Relaxation Improving PC Muscle Exercise Ball Set

Inside of every SVAKOM Nova  Kegal Vaginal Relaxation Improving PC Muscle Exercise Balls, there's a built-in moving metal ball. As you walk, run or swim, the metal ball will collide with the inner surface, because of gravity the SVAKOM Nova  Kegal Vaginal Relaxation Improving PC Muscle Exercise Ball tends to slip out of your body, but the subtle vibration stimulates your PC muscle to shrink and stop the ball from slipping out. The vibration may be subtle, but the repetitive shrinking will help strengthen your PC muscle through your every movement. That is how a SVAKOM kegel ball exercises your vagina.