Innovative height adjustment technology offers six (6) collars in one. Two-piece polyethylene design enhances patient comfort and is easily adjusted with hook & loop tabs. Anterior and posterior flex tabs on the front and back panels provide improved rigidity and durability. The large trachea opening provides functional access for the airway management and other essential procedures. Removable, foam laminated pads wick away moisture to ensure proper patient hygiene and comfort while preventing skin irritation. x-ray, CT and MRI lucent. Indication: Motion control of cervical spine flexion, extension and rotation to promote patient recovery.