ProCare® Vista® Rigid Cervical Collar, 1/EAPRODUCT FEATURES: Allows user to pull and turn the dial to select one of six Vista height settings Once the correct height has been determined, releasing the dial automatically locks the size Dial Settings: 1 = 1 inch, 2 = 2 inch, 3 = 3 inch, 4 = 3 inch, 5 = 4 inch and 6 = 5 inch Adjusting the Velcro straps enhances the patient comfort and flex tabs on the front panel help disperse pressure along the sternum The large tracheal aperture provides