The nautilus plate loaded tilt seat calf from gym company this machine is easy to adjustable and provides an effective workout directly to the calf muscles unlike standing calf exercises this doesn t strain on any other body part like the back or shoulders sensibly placed handles on the front of the machine provide comfortability when lifting heavy weights as does the thick padding on the knee padskey features of the nautilus plate loaded tilt seat calf adjustable thigh support to accommo