Two piece design, with front piece locking strap allows for maximum support and stability. Maneuverable chin piece allows for airway maintenance without loss of immobilization. Can be easily applied, adjusted or removed in either sitting or supine positions with little movement. NEC LOC is constructed of rigid polyethylene plastic, has trachea opening, is X-Ray lucent and is available in four color-coded sizes. Can be ordered individually or is available as kit of 4 units (1 ea. size) and is packed in a handy waterproof vinyl coated nylon storage case. Ideal for use in conjunction with JUNKIN VM Head and Neck Immobilizer.