From a low crouch to a standing position, the seat height of this chair can be easily adjusted in 2 inch increments by lifting the seat and hooking it to the horizontal bars located on the chair frame. These units have four special rubber attachments under the seat base which allow the seat to tilt forward and swivel left to right so it can adjust to your body movements and disperse the weight. The front tilts position of the seat is especially beneficial because it maintains the natural position of the spine.