Isabella, the metal-girl and her human aerobic-carpet

Isabella looks stunning in her liquid metal leggins and silver sneakers and she has her slave ready on the floor for to be her stepper for the next work-out. She uses his head as a steppingstone and presses his head deep in the soft mat. But then steps fullweight on his head and walks and dances  on his body like on a carpet.... her human aerobic-carpet!