This pair of weighted 1.25 inch diameter Rhythm Balls helps to exercise your pelvis and keep it healthy as well as providing pleasure whenever the smaller internal ball rotates inside you. They are easy and fun to use with no level of fitness required. Pop them in when you are at home or out and about. The simple exercises included in this pack help to tone your pelvic muscles. Ten minutes per day is the well balanced way. The balls can easily be removed after use via the pull cord which also prevents them from going in too far. Contents: 2 ivory coloured balls.