Unlike the Love Balls, these balls are massive and do NOT include an internal rolling ball. They are mounted together with a link rod from stainless steel of 3cm length and a diameter of 6mm.

Periodical training with it is fun and can strengthen the muscles of the pelvic floor. This is useful, not necessarily only from a medical point of view :-)

It's also a neat toy for the Top, to keep the Sub in shape..