The Pro From 400 ZLE cross trainer is a finest top quality machine that features an incline ramp that enables specific muscle groups to be targetted! The stride action on the 400 ZLE is very smooth thanks to a 7kg flywheel & friction free, servo assisted, computer controlled resistance mechanism (12 levels). With its long, 17 inch, stride length the Proform 400 ZLE is suitable for users of all heights.