Developed by some very innovative technology. the SMARTBALLS DUO is extremely quiet and smooth running with steady. fast rotation of the inner balls. An ergonomically shaped finger hollow makes insertion easy. So a woman can go about her day without interruption and at the same time be training diligently.

The SMARTBALLS can be inserted in the vagina lengthwise and with a drop of water-based lube. the retrieval band remains outside the body.