The Kegel exerciser (or vaginal barbell) is a medical device designed to be used by women to exercise the pubococcygeus muscle (also called the PC muscle). It can be used as a vaginal exerciser or as a vaginal dildo or sex toy. Made of smooth, polished solid stainless steel, a Kegel exerciser is cylindrical in shape, with a rounded bulge at each end. They typically weigh one pound and measure approximately 6 3/4 inches in length with a diameter of one inch at the widest part. Being made of stainless steel, Kegel exercisers are nonporous and can be wiped clean with a cloth moistened with mild soap and water. Because a Kegel exerciser does not have a flared base, it should not be used as an anal dildo as there is no way to prevent it from slipping inside.

For the above reason the Aria has already been discontinued and the Énergie is about to be.