Abstract: An exercising device in the form of a shoe having a series of weighted sections adapted to be added or removed so as to selectively vary the weight of the shoe. The weighted sections have cooperating joinder elements which enable them to be nested longitudinally with respect to each other in a cantilevered fashion and then locked in place. A rounded heel section is provided to facilitate exercises comprising rocking movements of the foot. In an alternative embodiment, a cooperating platform shoe member is provided for attaching to the device so that ambulation is facilitated without requiring removal of the exercising device.