Heavy Duty Vertical Stair Step Mountain Climber MachineHeavy Duty Vertical Stair Step Mountain Climber Machine Did you know that exercising on a climber machine not only strengthens your leg bones, but also relieves you of knee pain? Our stair climber machine was designed to mimic the action of climbing up stairs or mountains, giving you all your cardio requirements that you need. With its versatile design, the vertical climber is your all around workout machine that targets usual problematic areas with