CFX AEROBIC STEP ADJUSTABLEUse The COREFX Adjustable Aerobic Step to perform a variety of cardio, strength and aerobic workouts. Includes one platform and four removable risers to easily adjust the height levels for exercises customized for you! Description Control the intensity of your workout by simply adjusting the various height levels of The COREFX Adjustable Aerobic Step Platform. Featuring a secure lock feature, the included platform and four risers will remain sturdy