31 Inch Adjustable Exercise Aerobic Stepper with Non-Slip PadsKey Features Non slip Design Ensures Safety: The surface of the step platform adopts honeycomb design, which is non slip and non sticky, providing more grip and absorbing the shock to avoid slipping. In addition, the four non slip feet at the bottom ensure the platform is stable and protect your floor from scratches. 3 Adjustable Height Levels: Equipped with four risers, you can easily adjust the height of our exercise stepper from 4" to 6" to 8". It