The Sunny Health & Fitness SF-E3914 Climbing Cross Trainer Elliptical Stepper Machine combines all the benefits and advantages of a traditional home elliptical machine with the small footprint and intense workout potential of a stair stepper. The smooth motion of the SF-E3914 puts users in a rhythmic full body calorie burning workout. Isolate and target your lower body muscles by cranking up the resistance to focus on your hamstrings, glutes, quads and more!