ONI Positioning Pads - Arm Rests Made of a combination of soft, resilient foams and coated with durable vinyl. Teal. Armrests allow for proper positioning of the arms by raising them to the patient's natural height. Lower Arm Rests strap up to existing arm rests on the chair. Upper Arm Rests hook-and-loop to Lower Arm Rests, offering a surface for patient's arms.