The new design of the Stairmaster CL4600, made by none other than the industry leader in steppers, encourages the best posture and prevents the ability to cheat by transferring weight to the arms. The independent step action offers the extra wide sweet spot that makes the Stairmaster so easy to use and yet so effective. Regardless of your age or fitness level, this machine will offer you an enjoyable, motivational and undoubtedly challenging workout.