Makes getting in and out of the bath easy and safe. Adds 4″ to the step. Unique modular design allows mulitple steps to be stacked. Each additional step adds 2″. Bath step comes with four removable covers on the surface that lock into another step when stacking. Attractive, textured surface is slip resistant and comfortable. Max user weight 140 kg. Measures 16″ length by 20″ width by 4″ height.