Giantex Fitness Aerobic Step 29'' Club Cardio Adjust Exercise Stepper w/Risers 4'' - 6'' Surface Our aerobic step is designed with shock absorbing, non-stick, non-slip surface. HeightThe height can be adjusted from 4" and 6" which suits for different needs. Weight CapacityThe max weight capacity can reach 500lbs. FeatureThis step is lightweight , easy to assemble and carry.It provides excellent traction on any floor. DimensionUnit Dimension28.3"x14.2"x4" - 6"(L x W x H)