... fitness step,aerobic step,stepperThree adjustment heights of: 15cm, 20cm, or 25cmSnap in legs for maximum stability Dimensions: 98*38*15cmReinforced mat with omni ... and shock absorption Optimal length and width for Step Reebok moves Inclines and declines for body sculpting20GP: 500PCS40GP: 973PCS40HQ: 1141PCS aerobic step ZHA1005