The Rifton Pacer Gait Trainer Large, model K503, is a gait trainer designed for use by children and adults with walking and balance disabilities. This gait trainer features five supportive prompts that provide weight-bearing assistance and alignment. The prompts mount on the top bar with clamps, and can be removed when they are no longer needed. The basic unit is a lightweight, folding aluminum frame with a stable U-shaped base with four large-diameter caster wheels. The casters have separate control features for brake, swivel lock, variable drag, and one-way ratchet control, to use in any combination to control movement. The frame with prompts can be used in an anterior or posterior position. The frame telescopes for height adjustment to accommodate growth. OPTIONS: Arm prompt set, medium or large padded chest prompt, molded hip positioner with or without pad, thigh prompt set, ankle prompt set, handholds, and communication tray. DIMENSIONS (LxWxH): Open, the frame is 38 x 27.5 x 29 to 39 inches. When folded, the frame is 38 x 27.5 x 17.5 inches. The arm prompt height is 32 to 47 inches. The chest prompt height (top edge) is 36 to 51 inches. The medium chest prompt circumference adjusts from 22 to 40 inches and the large chest prompt adjusts from 28 to 50 inches. This unit is designed for users with a standing elbow height of 32 to 47 inches. CAPACITY: Maximum user weight is 200 pounds. WEIGHT: 27.5 pounds. COLOR: Red, blue, purple, champagne, raspberry, or electric lime.