Buy the StairMaster cardio 4000 range cheaper on Occasion-fitness.fr
The StairMaster 4000 line is a range offering a stepper with independent action.
4000 Series is the climb without jerks
The independent step, combined with the patented pedal geometry present on all StairMaster steppers, offers aerobic training equivalent to going uphill or climbing stairs, but without the powerful blows that hit the joints and muscles.