Strengthen your vaginal area and feel good doing so with these Gravity Ben-Wa Balls. These specialized Ben-Wa Balls fit easily into your vagina and vibrate as you move around. Gravity activates these balls and pulls on them, while your vagina works to keep them in, thereby making your vagina stronger and tighter. The balls pull out easy with the attached string. The balls measure 1" in length and 1.25" wide each.