Assists developmentally delayed children and adults who are experiencing ambulatory difficulties. Can be used as a stepping stone in therapy. Practice in the seated position of certain ambulatory patterns will prepare a person for actual use of the movements in a standing position. Sling is height adjustable from 9 - 17" and allows children and adults of all sizes to sit and propel themselves with their feet and to practice smooth reciprocal leg movements, heel strikes, and coordinated knee flexion and extension. Can also be used by therapists or parents as a comfortable support while assisting patients or children with walking exercises. Arm attachments are easily installed. The body of the crawler is lightweight durable plastic and weighs approximately 20 lb. Casters are factory installed and suitable for use on all hard floors and most carpeting.