The Cervical Balls are designed to strengthen the pelvic floor muscles, providing pleasurable sensations during movement. This set of three balls features internal weighted balls that vibrate upon contact with the walls of the vagina, enhancing muscle stimulation and contributing to more intense and prolonged orgasms over time. Easy to use thanks to the wire that connects them, the balls are inserted one at a time and are made from safe-to-touch ABS material. Cleaning and maintenance are simple, and no batteries are needed, as body movement alone is sufficient to produce the desired vibrations.