The photo is of the reverse side of an orthodontic extra-oral appliance commonly known as a face-mask or a reverse pull headgear. This spesific design Delaire type face-mask and is fitted to the patients face, the padding that fits to the child's forehead and chin is shown. The appliance is typically worn for between 14 and 16 hours a day during this treatment phase. The mask attaches to the patients upper jaw, typically, with braces fitted, using elastic bands (shown). This pulls the upper jaw forward while it is growing to correct a Class III malocclusion. The elastics also effectivly hold the mask in place, on the patents face.