The High Back Mobile Chair is a positioning chair designed for use by individuals with severe physical or neurological disabilities who require upper body support. The chair includes the mobile chair frame, a high backrest with push handle, pads, armrests, and footboard and sandals. The seat is available with a choice of seat tilt or seat spring action. The seat and backrest are contoured and padded, and a hip strap clips into the chair in a variety of positions to meet user needs. The armrests are individually height and tilt adjustable. The seat height and depth are adjustable. OPTIONS: Headrest, trunk support, tray, handhold for tray, additional side pads, leg abductor, leg prompts, footboard, sandals, and pair of wedges. SIZES: Model R631 is small for children 34 to 46 inches tall, model R632 is medium for children 42 to 55 inches tall, and model is R633 large for children 53 to 72 inches tall. DIMENSIONS: On model R631 the chair frame is 18 inches wide. The seat width is 12 inches with armrests, and the back height is 15 inches. The seat height above the floor adjusts from 7.5 to 10.5 inches and the seat depth adjusts from 8.5 to 11.5 inches. On model R632 the chair frame is 20 inches wide. The seat width is 14 inches with armrests. The back is 18 inches high. The seat height above the floor adjusts from 11.5 to 15.5 inches and the seat depth adjusts from 10.5 to 14 inches. On model R633 the chair frame is 23.5 inches wide. The seat width is 17 inches with armrests, and the back is 24 inches high. The seat height above the floor adjusts from 15.5 to 18.5 inches and the seat depth adjusts from 15 to 20 inches. CAPACITY: The small chair has a capacity of 75 pounds, the medium chair has a capacity of 150 pounds, and the large chairs has a capacity of 225 pounds. COLOR: Natural wood.