ProCare® California Rigid Cervical Collar Preformed Adult Large Two-Piece / Trachea Opening 3-1/4 Inch Height 16 to 19 Inch Neck Circumference (410224_EA) 1/EAProCare California tracheotomy cervical collar can be incorporated into a plaster body jacket The tracheotomy collar provides support for both extrication and rehabilitation Collar maintains head in neutral position and supports occipital and mandibular areas Ideal for cervical spine immobilization and extrication Large: 3 inch height (measured height from sternal notch to chin); 16 19 inches (measured neck circumference)