SportsArt ECO Self Propelled TreadmillThe new N685 non motorized, completely self powered treadmill from SportsArt boasts a sleek design that combines supremely low friction and flat slat belt to create an approachable unit that feels remarkably natural and comfortable. Utilizing both mechanical and electrical braking systems the N685 allows walking, jogging, running, sprinting or sled pushing features that cater to a broad spectrum of users, from deconditioned to elite athletes. Features