My wife bought this for me and I never used it. It just hid behind my lazy boy chair. Under desk or on floor exercise, pedals that you use to sit and pedal. Great therapy for ankles, knees and hips. Knew they were $143. I am asking $50. Constructed of heavy aluminum tubing that will fold up for storage. Digital data center, friction control, and straps on the pedal to hold your feet on. I am located in High River for pick up.