Client moves 12 brightly colored rings from side to side, improving ROM, developing eye-hand coordination, strengthening crossing-midline. Arc easily adjusts to 15", 20", 25" and 30" heights. Natural wood base is just 36" x ¾" x 6", portable for clinic or home use. Sturdy arc is ½" plastic. Add wrist weights to strengthen arms, hands and wrists. Designed by an occupational therapist. Latex free.