DESC: The latest evolution of state-of-the-art climbing exercise. Patented, independent pedal geometry ensures safe, biomechanically correct movement. The high intensity, short-duration workout of a StairMaster stepper is unbeatable. Speed control buttons allow you to increase or decrease the intensity of stepping action at any time during your workout. Space-saving design fits in less than 2' x 4' of floor space. Polar chest strap and compatible telemetric Heart Rate monitoring.