Vaginal tightening for professionals, this triple pleasure ball set stimulates the pelvic floor muscles during movement, forcing them to contract, creating wonderfully pleasurable sensations that not only tone the muscles but, over time, help achieve longer, stronger orgasms. Connected by a string for ease of use and a fit that suits you, each of the 3 outer balls contains a weighted inner ball that vibrates against the vaginal walls. No batteries required. All you need is the movement of your body to get the balls knocking. Easy to clean and maintain, the skin-safe Abs balls are designed to be inserted one by one, providing almost twice the muscle toning power of a classic ball set.