With these balls your pelvic floor muscles get a true workout. Well trained muscles ensure that you will enjoy sex even more. So you can tighten these muscles for a tighter feeling for you and your partner. These double balls are made of soft silicone and feel very pleasant to the touch. The design is beautiful and feminine, you insert it easily and with the handy string you can easily remove the balls again. With every movement you will feel the internal stimulation of the weights. The weights are also removable so you can easily clean them.