Ben Wa Balls on a String is a sex toy designed especially for female pleasures. This device includes four metal balls connected with each other by a nylon string that are smooth for easily inserting and pulling out. The balls are weighted and being inserted into a vagina, they stimulate the vaginal walls and erogenous zones inside. They are also perfect for Kegel exercises - easy movements intended for strengthen the vaginal muscles for more intense orgasms and pleasures during sex sessions.