Rabbit Force Head Gear With Chin Cap The high-pull instant-fit headgear with chin cap is a type of orthodontic headgear designed to treat Class III malocclusion, which is a condition where the lower jaw protrudes beyond the upper jaw, resulting in an underbite. This headgear is also commonly used to retain the correction of a Class III malocclusion after treatment. The chin cap is designed to fit over the patient's chin, and the headgear is adjusted to apply force components that are carried to the chin and directed posteriorly and superiorly. The chin cap helps to distribute the forces more evenly and reduces the likelihood of any discomfort or pressure points. The high-pull instant-fit headgear is called "instant-fit" because it is pre-formed and does not require any bending or adjustment before use. This feature saves time and makes it easy for orthodontists to fit the headgear quickly and accurately.