The DKN studio aerobic step has a large, durable platform constructed from reinforced plastic, with a non-slip surface. A huge number of exercises, including ones for improving cardiovascular fitness, can be undertaken on this piece of gym equipment, and its height can be adjusted by the 4 risers so you can choose a workout height of 10cm, 15cm or 20cm. The exercise stepper is a professional-style accessory, and despite its sturdy build it is lightweight for ease of use and storage.