The Alexandra -Experience one of the oldest forms of female stimulation. Dating back over 100 years, the Kegel Ball was created to enhance the sexual experience by exercising & toning the vaginal muscles. Use the balls alone to increase muscle strength , or with the soft silicone sleeve to take your orgasms to the next level. Perfect alone, or for couples. It comes with 2 ABS Kegel Balls, a silicone sleeve, and one silicone coated ball with soft retrieval cord. Use the balls alone for at least 15 minutes to strengthen the vaginal muscle, or during intercourse to stimulate the penis and increase natural vaginal lubrication.