Skip the gym and add a little variety to your workout routine with this must-have aerobic step platform! Shaped with performance in mind, this easy-to-use aerobic step platform is the perfect way to improve your workouts. The COREFX Adjustable Aerobic Step Platform allows you to control the intensity of your workout by simply adjusting the various height levels. The Aerobic Steps feature a secure safe lock feature to ensure a secure platform. Comes with four Aerobic Steps, two for each side. Adjustable height You can create a low, moderate, or high-intensity workout with the Aerobic Step. Altogether, the platform is 4″, and adding one riser on each side will increase it to 6″. You can continue stacking risers if you need even greater height.