With The High-Step Club Aerobic Stepper, users can increase the level of difficulty as their aerobic fitness, strength, and endurance improve! The High-Step Club Step features a non-slip platform that supports up to 275 lbs. The black support blocks can be used to adjust the step from 4in to 12.5in high. Build strength, endurance, and boost your aerobic health with the High-Step Club Aerobic Stepper from The Step!