deluxe vibro balls4 beads on a string with a Soft Touch texture! String of 4 vibro balls with a Soft Touch texture and an elastic retrieval cord. The balls are perfectly suitable for an efficient training of the pelvic floor muscles: they have rotating ball weights on the inside that vibrate with each movement of the body, resulting in strengthening muscle contractions. Their weight of 167. 8 g makes these vibro balls ideal for more advanced users and experts. Of